Exhibit 2.1

                          AGREEMENT AND PLAN OF MERGER


                              DATED JULY 31, 2001



                                     AMONG


                          INDIA-SIERRA HOLDINGS, INC.,

                             iXL ENTERPRISES, INC.,

                              SCIENT CORPORATION,

                            INDIA MERGER SUB, INC.,

                                      AND

                            SIERRA MERGER SUB, INC.





                               TABLE OF CONTENTS

ARTICLE 1. HOLDING COMPANY AND SUBSIDIARIES....................................1

1.1.    Organization of Holdco.................................................1
1.2.    Directors and Officers of Holdco.......................................2
1.3.    Organization of Merger Subsidiaries....................................2
1.4.    Actions of Scient and iXL..............................................2

ARTICLE 2. THE MERGERS; CERTAIN RELATED MATTERS................................2

2.1.    The Mergers............................................................2
2.2.    Closing................................................................3
2.3.    Effective Time.........................................................3
2.4.    Effect of the Mergers..................................................3
2.5.    Charter and Bylaws.....................................................3
2.6.    Officers and Directors.................................................4
2.7.    Effect of Scient Merger on Scient Common Stock.........................4
2.8.    Effect of Scient Merger on Scient Stock Options and Restricted Stock...5
2.9.    Effect of iXL Merger on iXL Common Stock...............................6
2.10.   Effect of iXL Merger on iXL Stock Options..............................7
2.11.   iXL Warrants...........................................................8
2.12.   Certain Adjustments....................................................9

ARTICLE 3. EXCHANGE OF CERTIFICATES............................................9

3.1.    Exchange Fund..........................................................9
3.2.    Exchange Procedures....................................................9
3.3.    Dividends.............................................................10
3.4.    No Further Ownership Rights in Stock..................................10
3.5.    No Fractional Shares of Holdco Common Stock...........................10
3.6.    Termination of Exchange Fund..........................................11
3.7.    No Liability..........................................................11
3.8.    Investment of the Exchange Fund.......................................11
3.9.    Lost Certificates.....................................................11
3.10.   Further Assurances....................................................12
3.11.   Stock Transfer Books..................................................12

ARTICLE 4. REPRESENTATIONS AND WARRANTIES.....................................12

4.1.    Representations and Warranties of iXL.................................12
4.2.    Representations and Warranties of Scient..............................29

ARTICLE 5. COVENANTS RELATING TO CONDUCT OF BUSINESS..........................46

5.1.    Covenants of iXL......................................................46
5.2.    Covenants of Scient...................................................51
5.3.    Governmental Filings..................................................57


                                       i



5.4.    Control of Other Party's Business.....................................57

ARTICLE 6. ADDITIONAL AGREEMENTS..............................................57

6.1.    Preparation of Proxy Statement; Stockholders Meetings.................57
6.2.    Holdco Board of Directors; Executive Officers.........................60
6.3.    Termination of Registration of Scient Common Stock and
        iXL Common Stock......................................................61
6.4.    Access to Information.................................................61
6.5.    Reasonable Best Efforts...............................................62
6.6.    Acquisition Proposals.................................................63
6.7.    Fees and Expenses.....................................................67
6.8.    Directors' and Officers' Indemnification and Insurance................67
6.9.    Public Announcements..................................................69
6.10.   Listing of Shares of Holdco Common Stock..............................69
6.11.   Affiliates............................................................70
6.12.   Section 16 Matters....................................................70
6.13.   Holdco Stock Option Plan..............................................71
6.14.   Notices of Certain Events.............................................71
6.15.   Amendment of Rights Agreement. .......................................71

ARTICLE 7. CONDITIONS PRECEDENT...............................................71

7.1.    Conditions to Each Party's Obligation to Effect its Respective Merger.72
7.2.    Additional Conditions to Obligations of iXL...........................72
7.3.    Additional Conditions to Obligations of Scient........................73

ARTICLE 8. TERMINATION AND AMENDMENT..........................................74

8.1.    Termination...........................................................74
8.2.    Effect of Termination.................................................75
8.3.    Amendment.............................................................77
8.4.    Extension; Waiver.....................................................77

ARTICLE 9. GENERAL PROVISIONS.................................................77

9.1.    Non-Survival of Representations, Warranties and Agreements............77
9.2.    Notices...............................................................77
9.3.    Interpretation........................................................79
9.4.    Counterparts..........................................................80
9.5.    Entire Agreement; No Third Party Beneficiaries........................80
9.6.    Governing Law.........................................................80
9.7.    Severability..........................................................80
9.8.    Assignment............................................................80
9.9.    Submission to Jurisdiction; Waivers...................................81
9.10.   Enforcement...........................................................81
9.11.   Definitions...........................................................82
9.12.   Performance and Obligations...........................................84


                                      ii



                                    EXHIBITS

Exhibit A  - Voting Agreements
Exhibit B  - Holdco Charter
Exhibit C  - Holdco Bylaws
Exhibit D  - Sierra Merger Sub Certificate
Exhibit E  - India Merger Sub Certificate
Exhibit F  - Sierra Merger Sub Bylaws
Exhibit G  - India Merger Sub Bylaws
Exhibit H  - Affiliate Agreement
Exhibit I  - Affiliate Registration Rights Agreement
Exhibit J  - Tax Representation Letters for Greenberg Traurig, LLP
Exhibit K  - Tax Representation Letters for Davis Polk & Wardwell LLP


                                      iii



                             Index of Defined Terms

Defined Terms                                               Defined in Section
- -------------                                               ------------------
Acquiring Person                                            Section 4.2(r)
Acquisition Proposal                                        Section 6.6(a)
Actions                                                     Section 4.1(j)(i)
Adjustment Factor                                           Section 9.11
Affiliate                                                   Section 9.11
Affiliate Agreement                                         Section 6.11(a)
Affiliate Registration Rights Agreement                     Section 6.11(c)
Agreement                                                   Preamble
Audit                                                       Section 9.11
beneficial ownership or beneficially own                    Section 9.11
Benefit Plans                                               Section 9.11
Blue Sky Laws                                               Section 4.1(c)(iii)
Board of Directors                                          Section 9.11
Business Day                                                Section 9.11
Certificates of Mergers                                     Section 2.3
Certificates                                                Section 2.9
Change in the iXL Recommendation                            Section 6.6(b)
Change in the Scient Recommendation                         Section 6.6(b)
Closing                                                     Section 2.2
Closing Date                                                Section 2.2
Code                                                        Recitals 5
Companies                                                   Recitals 1
Company                                                     Recitals 1
Confidentiality Agreement                                   Section 6.4
DGCL                                                        Section 2.1
Distribution Date                                           Section 4.2(r)
Effective Time                                              Section 2.3
ERISA                                                       Section 9.11
ERISA Affiliate                                             Section 4.1(q)(i)
Exchange Act                                                Section 4.1(c)(iii)
Exchange Agent                                              Section 3.1
Exchange Fund                                               Section 3.1

- -------------------------------------------------------------------------------

                                      iv



Defined Terms                                               Defined in Section
- -------------                                               ------------------
Expenses                                                    Section 6.7
Form S-4                                                    Section 6.1(a)
GAAP                                                        Section 4.1(e)(i)
Governmental Entity                                         Section 4.1(c)(iii)
Holdco                                                      Preamble
Holdco Bylaws                                               Section 1.1
Holdco Charter                                              Section 1.1
Holdco Common Stock                                         Section 1.1
Holdco Preferred Stock                                      Section 1.1
HSR Act                                                     Section 4.1(c)(iii)
India Merger Sub                                            Preamble
India Merger Sub Bylaws                                     Section 2.5(d)
India Merger Sub Certificate                                Section 2.5(b)
India Merger Sub Common Stock                               Section 2.9(a)
Intellectual Property                                       Section 9.11
iXL                                                         Preamble
iXL Benefit Plans                                           Section 4.1(q)(i)
iXL Board Approval                                          Section 4.1(g)
iXL Certificate                                             Section 2.9
iXL Common Stock                                            Section 2.9
iXL Contracts                                               Section 4.1(p)(i)
iXL Disclosure Schedule                                     Section 4.1
iXL Employee Nonsolicitation and Confidentiality Agreement  Section 4.1(l)
iXL Exchange Ratio                                          Section 2.9(c)
iXL Filed SEC Reports                                       Section 4.1(e)(ii)
iXL Leased Properties                                       Section 4.1(t)
iXL Merger                                                  Section 2.1(b)
iXL Merger Consideration                                    Section 2.9(c)
iXL Minority Interest                                       Section 4.1(d)(i)
iXL Payment Event                                           Section 8.2(c)
iXL Permits                                                 Section 4.1(j)(ii)
iXL Public Proposal                                         Section 8.2(c)
iXL Purchase Plan                                           Section 2.10(e)
iXL Recommendation                                          Section 6.1(c)
- -------------------------------------------------------------------------------

                                       v



Defined Terms                                               Defined in Section
- -------------                                               ------------------
iXL Related Persons                                         Section 4.1(s)(i)
iXL SEC Reports                                             Section 4.1(e)(i)
iXL Stock Options                                           Section 2.10(d)
iXL Stock Plans                                             Section 2.10(d)
iXL Stockholders Meeting                                    Section 6.1(c)
iXL Voting Debt                                             Section 4.1(b)(ii)
iXL Warrants                                                Section 4.1(b)(i)
Joint Proxy Statement/Prospectus                            Section 6.1(a)
known or knowledge                                          Section 9.11
Liens                                                       Section 4.1(a)(ii)
Material Adverse Effect                                     Section 9.11
Merger Consideration                                        Section 2.9(c)
Merger Subsidiaries                                         Section 1.3
Mergers                                                     Section 2.1(b)
Necessary Consents                                          Section 4.1(c)(iii)
Person                                                      Section 9.11
Regulatory Law                                              Section 6.5(b)
Required Approvals                                          Section 6.5(a)
Required iXL Vote                                           Section 4.1(i)
Required Scient Vote                                        Section 4.2(i)
Right                                                       Section 2.7(c)
Rights                                                      Section 2.7(c)
Rights Agreement                                            Section 2.7(c)
Rights Agreement Amendments                                 Section 6.15
Rule 145 Affiliates                                         Section 6.11(b)
Scient                                                      Preamble
Scient 2000 Options                                         Section 2.8(c)
Scient 2000 Plan                                            Section 2.8(c)
Scient 97 Options                                           Section 2.8(b)
Scient 97 Plans                                             Section 2.8(b)
Scient 99 Options                                           Section 2.8(a)
Scient 99 Plan                                              Section 2.8(a)
Scient Benefit Plans                                        Section 4.2(q)(i)
Scient Board Approval                                       Section 4.2(g)
- -------------------------------------------------------------------------------

                                      vi



Defined Terms                                               Defined in Section
- -------------                                               ------------------
Scient Certificate                                          Section 2.7
Scient Common Stock                                         Section 2.7
Scient Contracts                                            Section 4.2(p)
Scient Disclosure Schedule                                  Section 4.2
Scient Employee Nonsolicitation Confidentiality Agreement   Section 4.2(l)
Scient Exchange Ratio                                       Section 2.7(c)
Scient Filed SEC Reports                                    Section 4.2(e)(ii)
Scient Leased Properties                                    Section 4.2(u)
Scient Merger                                               Section 2.1(a)
Scient Merger Consideration                                 Section 2.7(c)
Scient Minority Interest                                    Section 4.2(d)(i)
Scient Options                                              Section 2.8(c)
Scient Payment Event                                        Section 8.2(b)
Scient Permits                                              Section 4.2(j)(ii)
Scient Plans                                                Section 2.8(c)
Scient Public Proposal                                      Section 8.2(b)
Scient Purchase Plan                                        Section 2.9(d)
Scient Recommendation                                       Section 6.1(b)
Scient Related Persons                                      Section 4.2(t)(i)
Scient SEC Reports                                          Section 4.2(e)(i)
Scient Stockholders Meeting                                 Section 6.1(b)
Scient Voting Debt                                          Section 4.2(b)(ii)
SEC                                                         Section 4.1(a)(ii)
Securities Act                                              Section 4.1(c)(iii)
Sierra Merger Sub                                           Preamble
Sierra Merger Sub Bylaws                                    Section 2.5(c)
Sierra Merger Sub Certificate                               Section 2.5(a)
State Takeover Laws                                         Section 4.1(h)
Stock Acquisition Date                                      Section 4.2(r)
Stockholders Meeting                                        Section 9.11
Subsidiary                                                  Section 9.11
Superior Proposal                                           Section 6.6(b)
Tax                                                         Section 4.1(n)
Tax Authority                                               Section 9.11
- -------------------------------------------------------------------------------

                                      vii



Defined Terms                                               Defined in Section
- -------------                                               ------------------
Tax Return                                                  Section 4.1(p)
Taxes                                                       Section 4.1(n)
Termination Date                                            Section 8.1(b)
Tessera Options                                             Section 2.10(b)
Tessera Plan                                                Section 2.10(b)
the other party                                             Section 9.11
Third Party                                                 Section 9.11
Violation                                                   Section 4.1(c)(ii)
Voting Agreements                                           Recitals 4
96 Options                                                  Section 2.10(a)
96 Plan                                                     Section 2.10(a)
98 Options                                                  Section 2.10(c)
98 Plan                                                     Section 2.10(c)
99 Options                                                  Section 2.10(d)
99 Plan                                                     Section 2.10(d)


                                     viii



     AGREEMENT AND PLAN OF MERGER (this "Agreement") entered into on this 31st
day of July 2001, by and among INDIA-SIERRA HOLDINGS, INC., a Delaware
corporation ("Holdco"), IXL ENTERPRISES, INC., a Delaware corporation ("iXL"),
SCIENT CORPORATION, a Delaware corporation ("Scient"), INDIA MERGER SUB, INC.,
a Delaware corporation and a direct, wholly owned subsidiary of Holdco ("India
Merger Sub"), and SIERRA MERGER SUB, INC., a Delaware corporation and a direct,
wholly owned subsidiary of Holdco ("Sierra Merger Sub").

                                    RECITALS

     1. The Board of Directors of each of Scient and iXL (each, a "Company,"
and collectively, the "Companies") deem it fair, advisable and in the best
interests of the relevant Company and its stockholders that Scient and iXL
engage in a business combination constituting a merger of equals in order to
implement and advance the long-term strategic business, prospects, interests
and objectives of both Companies;

     2. The combination of the Companies shall be effected in accordance with
the terms of this Agreement through each of the Mergers and the transactions
contemplated thereby;

     3. In furtherance thereof, the Board of Directors of each of Scient, iXL,
Holdco, India Merger Sub and Sierra Merger Sub has approved this Agreement and
the Mergers, upon the terms and subject to the conditions set forth in this
Agreement, pursuant to which each share of capital stock of Scient and each
share of capital stock of iXL issued and outstanding immediately prior to the
Effective Time will be converted into the right to receive shares of capital
stock of Holdco as set forth herein;

     4. As a condition precedent and inducement to each Company's willingness
to enter into this Agreement, certain stockholders of each of Scient and iXL,
as applicable, shall each enter into a voting agreement of even date herewith,
in the forms of Exhibit A hereto (collectively, the "Voting Agreements"),
pursuant to which such stockholders shall agree, among other things, to vote
their shares of capital stock in the relevant Company in favor of the adoption
of this Agreement; and

     5. For purposes of U.S. Federal and state income tax, the parties hereto
intend for the Mergers to qualify as reorganizations within the meaning of
Section 368(a) of the Internal Revenue Code of 1986, as amended (the "Code")
and the regulations promulgated thereunder.

     NOW, THEREFORE, in consideration of the foregoing and the respective
representations, warranties, covenants and agreements set forth in this
Agreement, and intending to be legally bound hereby and thereby, the parties
hereto agree as follows:

                ARTICLE 1. HOLDING COMPANY AND SUBSIDIARIES

     1.1. Organization of Holdco. Scient and iXL have caused Holdco to be
organized under the laws of the State of Delaware. The authorized capital stock
of


                                       1



Holdco consists of 500,000,000 shares of common stock, par value $0.0001 per
share (the "Holdco Common Stock"), of which one share has been issued to each
of Scient and iXL, at a price of $100.00 per share, and 10,000,000 shares of
preferred stock, par value $0.0001 per share (the "Holdco Preferred Stock").
Scient and iXL shall take, and shall cause Holdco to take, all requisite action
to cause the certificate of incorporation of Holdco to be in the form of
Exhibit B hereto (the "Holdco Charter"); and the bylaws of Holdco to be in the
form of Exhibit C hereto (the "Holdco Bylaws"), in each case, at the Effective
Time. At the Effective Time, the Holdco Charter shall be amended to change the
name of Holdco to "Scient, Inc."

     1.2. Directors and Officers of Holdco. Prior to the Effective Time, the
directors and officers of Holdco shall consist of equal numbers of
representatives of iXL and Scient as designated and elected by iXL and Scient.
iXL and Scient shall take all requisite action to cause the directors and
officers of Holdco at the Effective Time to be as provided in Section 6.2, and
with such duly constituted committees of the Board as provided in Section 6.2,
with each such director and officer to remain in office until his or her
successor is duly elected, appointed and qualified in accordance with the
Holdco Bylaws.

     1.3. Organization of Merger Subsidiaries. Holdco has caused India Merger
Sub and Sierra Merger Sub (collectively, the "Merger Subsidiaries") to be
organized for the sole purpose of effectuating the Mergers contemplated herein.
The authorized capital stock of Sierra Merger Sub consists of 100 shares of
common stock, par value $0.01 per share, all of which shares have been issued
to Holdco at a price of $1.00 per share. The authorized capital stock of India
Merger Sub consists of 100 shares of common stock, par value $0.01 per share,
all of which shares have been issued to Holdco at a price of $1.00 per share.

     1.4. Actions of Scient and iXL. Scient and iXL, as the holders of all the
outstanding shares of Holdco Common Stock, have approved this Agreement and
have caused Holdco, as the sole stockholder of each of the Merger Subsidiaries,
to adopt this Agreement. Each of Scient and iXL shall cause Holdco, and Holdco
shall cause the Merger Subsidiaries, to perform their respective obligations
under this Agreement.

                ARTICLE 2. THE MERGERS; CERTAIN RELATED MATTERS

     2.1. The Mergers. Upon the terms and subject to the conditions set forth
in this Agreement, and in accordance with the Delaware General Corporation Law,
as amended (the "DGCL"):

          (a)  Scient Merger. At the Effective Time, Sierra Merger Sub shall be
               merged with and into Scient (the "Scient Merger"). Scient shall
               be the surviving corporation in the Scient Merger and shall
               continue its corporate existence under the laws of the State of
               Delaware. As a result of the Scient Merger, Scient shall become
               a direct, wholly owned subsidiary of Holdco.


                                       2



          (b)  iXL Merger. At the Effective Time, iXL shall be merged with and
               into India Merger Sub (the "iXL Merger"). India Merger Sub shall
               be the surviving corporation in the iXL Merger and shall
               continue its corporate existence under the laws of the State of
               Delaware. At the Effective Time, India Merger Sub shall change
               its name to iXL Enterprises, Inc. The Scient Merger and the iXL
               Merger, which shall occur simultaneously, are together referred
               to herein as the "Mergers."

     2.2. Closing. Upon the terms and subject to the conditions set forth in
Article 7 and the termination rights set forth in Article 8, the closing of the
Mergers (the "Closing") shall take place as promptly as possible after (but in
no event later than the second Business Day after) the satisfaction or waiver
(subject to applicable law) of the last to occur of the conditions (excluding
conditions that, by their nature, cannot be satisfied until the Closing Date)
set forth in Article 7, unless this Agreement theretofore has been terminated
pursuant to its terms or unless another time or date is agreed to in writing by
the parties hereto (the actual time and date of the Closing being referred to
herein as the "Closing Date"). The Closing shall be held at the offices of
Greenberg Traurig, LLP, The MetLife Building, 200 Park Avenue, New York, New
York, 10166, unless another place is agreed to in writing by the parties
hereto.

     2.3. Effective Time. As soon as practicable following the satisfaction or
waiver (subject to applicable law) of the conditions set forth in Article 7, at
the Closing the parties shall file the Certificates of Merger with the
Secretary of State of the State of Delaware in such form as is required by and
executed and acknowledged in accordance with the relevant provisions of the
DGCL and make all other filings or recordings required under the DGCL. The
Mergers shall become effective at (i) the date and time each of the certificate
of merger relating to the Scient Merger and the certificate of merger relating
to the iXL Merger (collectively, the "Certificates of Merger") are duly filed
with the Secretary of State of the State of Delaware, or (ii) such subsequent
time as the Companies shall agree and as shall be specified in the respective
Certificates of Merger; provided, however that the Mergers shall become
effective at the same time (such time as the Mergers become effective being
referred to herein as the "Effective Time").

     2.4. Effect of the Mergers. At and after the Effective Time, the Mergers
shall have the effects set forth in the DGCL, including Section 259 thereof.

     2.5. Charter and Bylaws.

          (a)  Certificate of Incorporation for Sierra Merger Sub. The
               certificate of incorporation of Sierra Merger Sub in effect
               immediately prior to the Effective Time, as set forth in the
               form of Exhibit D hereto (the "Sierra Merger Sub Certificate"),
               shall be the certificate of incorporation of the surviving
               corporation in the Scient Merger, until thereafter amended as
               provided by law.


                                       3



          (b)  Certificate of Incorporation for India Merger Sub. The
               certificate of incorporation of India Merger Sub in effect
               immediately prior to the Effective Time, as set forth in the
               form of Exhibit E hereto (the "India Merger Sub Certificate"),
               shall be the Certificate of Incorporation of the surviving
               corporation in the iXL Merger, until thereafter amended as
               provided by law.

          (c)  Bylaws of Sierra Merger Sub. The bylaws of Sierra Merger Sub in
               effect immediately prior to the Effective Time, as set forth in
               the form of Exhibit F hereto (the "Sierra Merger Sub Bylaws"),
               shall be the bylaws of the surviving corporation in the Scient
               Merger, until thereafter amended in accordance with the Sierra
               Merger Sub Certificate and as provided by law.

          (d)  Bylaws of India Merger Sub. The bylaws of India Merger Sub in
               effect immediately prior to the Effective Time, as set forth in
               the form of Exhibit G hereto (the "India Merger Sub Bylaws"),
               shall be the bylaws of the surviving corporation in the iXL
               Merger, until thereafter amended in accordance with the India
               Merger Sub Certificate and as provided by law.

     2.6. Officers and Directors. The officers of Scient immediately prior to
the Effective Time shall be the officers of the surviving corporation in the
Scient Merger, until their respective successors are duly appointed and
qualified. The officers of iXL immediately prior to the Effective Time shall be
the officers of the surviving corporation in the iXL Merger, until their
respective successors are duly appointed and qualified. The directors of Sierra
Merger Sub immediately prior to the Effective Time shall be the directors of
the surviving corporation in the Scient Merger, until their respective
successors are duly elected and qualified. The directors of India Merger Sub
immediately prior to the Effective Time shall be the directors of the surviving
corporation in the iXL Merger, until their respective successors are duly
elected and qualified.

     2.7. Effect of Scient Merger on Scient Common Stock. At the Effective
Time, by virtue of the Scient Merger and without any action on the part of the
holder of any shares of Scient's common stock, par value $0.0001 ("Scient
Common Stock") or any shares of capital stock of Sierra Merger Sub :

          (a)  Capital Stock of Sierra Merger Sub. Each issued and outstanding
               share of common stock, par value $0.01 per share, of Sierra
               Merger Sub shall be converted into the right to receive one
               fully paid and nonassessable share of common stock, par value
               $0.0001 per share, of the surviving corporation in the Scient
               Merger.

          (b)  Cancellation of Treasury Stock. Each share of Scient Common
               Stock issued and owned or held by Scient, Holdco or any
               subsidiary of Scient or Holdco shall cease to be outstanding and
               shall be canceled and retired, and no consideration shall be
               delivered in exchange therefor.


                                       4



          (c)  Conversion of Scient Common Stock. Subject to Section 3.5, each
               issued and outstanding share of Scient Common Stock (other than
               shares to be canceled and retired in accordance with Section
               2.7(b)), including the associated rights to purchase Scient's
               Series A Junior Participating Preferred Stock (each, a "Right"
               and collectively, the "Rights"), distributed as a dividend to
               holders of record of Scient Common Stock on July 31, 2000,
               pursuant to that certain Rights Agreement dated July 18, 2000,
               between Scient and U.S. Stock Transfer Corporation, as Rights
               Agent (the "Rights Agreement"), shall be converted into the
               right to receive such number of fully paid and nonassessable
               shares of Holdco Common Stock (the "Scient Merger
               Consideration") equal to the quotient obtained by dividing (x)
               1.24 by (y) the Adjustment Factor (the "Scient Exchange Ratio").

     As a result of the Scient Merger and without any action on the part of the
holders, at the Effective Time all shares of Scient Common Stock shall cease to
be outstanding and shall be canceled and retired and shall cease to exist, and
each holder of a certificate that immediately prior to the Effective Time
represented any such shares of Scient Common Stock (such certificate or other
evidence of ownership of certificated or uncertificated shares of Scient Common
Stock, a "Scient Certificate") shall thereafter cease to have any rights with
respect to such shares of Scient Common Stock, except the right (subject to
Section 2.7(b)) to receive the applicable Scient Merger Consideration with
respect thereto and any cash in lieu of fractional shares as provided in
Section 3.5.

     2.8. Effect of Scient Merger on Scient Stock Options and Restricted Stock.

          (a)  1999 Equity Incentive Plan. At the Effective Time, all options
               and other rights to purchase Scient Common Stock (the "Scient 99
               Options") pursuant to Scient's 1999 Equity Incentive Plan, as
               amended (the "Scient 99 Plan"), shall expire pursuant to Section
               11.3(d) of the Scient 99 Plan; provided, however, all unvested
               Scient 99 Options shall accelerate and vest prior to the
               Effective Time. The Board of Directors of Scient shall take all
               actions necessary pursuant to Section 11.3 of the Scient 99 Plan
               to cause the expiration of the Scient 99 Options as contemplated
               in this Section 2.8(a).

          (b)  1997 Stock Plan. At the Effective Time, all options and other
               rights to purchase Scient Common Stock (the "Scient 97 Options")
               pursuant to Scient's 1997 Stock Plan, as amended (the "Scient 97
               Plan"), shall be cancelled pursuant to Section 8(b)(iv) of the
               Scient 97 Plan; provided however, all unvested Scient 97 Options
               shall accelerate and vest prior to the Effective Time and all
               repurchase


                                       5



               rights with respect to all shares of Scient Common Stock
               acquired under the Scient 97 Plan shall terminate. The Board of
               Directors of Scient shall take all actions necessary pursuant to
               Section 8(b) of the Scient 97 Plan to cause the cancellation of
               the Scient 97 Options as contemplated in this Section 2.8(b).

          (c)  2000 Stock Plan. At the Effective Time, all options and other
               rights to purchase Scient Common Stock (the "Scient 2000
               Options," together with the Scient 99 Options and the Scient 97
               Options, the "Scient Options") pursuant to Scient's 2000 Stock
               Plan (the "Scient 2000 Plan," together with the Scient 99 Plan
               and the Scient 97 Plan, the "Scient Plans"), shall be cancelled
               pursuant to Section 8.3(d) of the Scient 2000 Plan; provided,
               however, all unvested Scient 2000 Options shall accelerate and
               vest prior to the Effective Time. The Board of Directors of
               Scient shall take all actions necessary pursuant to Section 8.3
               of the Scient 2000 Plan to cause the cancellation of the Scient
               2000 Options as contemplated in this Section 2.8(c).

          (d)  Stock Purchase Plan. Promptly following the date hereof, the
               Board of Directors of Scient shall take such actions as
               necessary to terminate Scient's 1999 Employee Stock Purchase
               Plan (the "Scient Purchase Plan"), pursuant to Section 14
               thereof; provided, however, such termination shall be
               conditioned upon the consummation of the Scient Merger and shall
               be made effective as of the Effective Time. At the sole
               discretion of the Board of Directors of Scient, Scient shall
               provide to each participant of the Scient Purchase Plan notice
               of such termination and the balance then credited to each such
               participant's account shall be distributed as soon as reasonably
               practicable following the Effective Time, without interest.

     2.9. Effect of iXL Merger on iXL Common Stock. At the Effective Time, by
virtue of the iXL Merger and without any action on the part of the holder of
any shares of iXL's common stock, par value $0.01 ("iXL Common Stock") or any
shares of capital stock of India Merger Sub:

          (a)  Capital Stock of India Merger Sub. Each share of common stock,
               par value $0.01 per share of India Merger Sub ("India Merger Sub
               Common Stock") shall remain outstanding and each certificate
               therefor shall continue to evidence one fully paid and
               non-assessable share of India Merger Sub Common Stock.

          (b)  Cancellation of Treasury Stock. Each share of iXL Common Stock
               issued and owned or held by iXL, Holdco or any subsidiary of
               Holdco shall cease to be outstanding and shall be canceled and


                                       6



               retired, and no consideration shall be delivered in exchange
               therefor.

          (c)  Conversion of iXL Common Stock. Subject to Section 3.5, each
               issued and outstanding share of iXL Common Stock (other than
               shares to be canceled and retired in accordance with Section
               2.9(b)) shall be converted into the right to receive such number
               of fully paid and non-assessable shares of Holdco Common Stock
               (the "iXL Merger Consideration" and, together with the Scient
               Merger Consideration, the "Merger Consideration") equal to the
               quotient obtained by dividing (x) 1.00 by (y) the Adjustment
               Factor (the "iXL Exchange Ratio").

     As a result of the iXL Merger and without any action on the part of the
holders of any shares of iXL Common Stock, at the Effective Time all shares of
iXL Common Stock shall cease to be outstanding and shall be canceled and
retired and shall cease to exist, and each holder of a certificate which
immediately prior to the Effective Time represented any such shares of iXL
Common Stock (an "iXL Certificate" and, together with the Scient Certificates,
the "Certificates") shall thereafter cease to have any rights with respect to
such shares of iXL Common Stock, except the right (subject to Section 2.9(b))
to receive the applicable iXL Merger Consideration with respect thereto and any
cash in lieu of fractional shares as provided in Section 3.5.

     2.10. Effect of iXL Merger on iXL Stock Options.

          (a)  1996 Plan. At the Effective Time, all options and other rights
               to purchase iXL Common Stock (the "96 Options") pursuant to
               iXL's 1996 Stock Option Plan, as amended (the "96 Plan"),
               whether or not then vested or exercisable, shall terminate
               pursuant to Section 4.2(b) of the 96 Plan and be forfeited. To
               the extent applicable, prior to the date on which the
               shareholders of iXL approve the iXL Merger, the Board of
               Directors of iXL shall determine, pursuant to Section 4.4 of the
               96 Plan, that none of the 96 Options shall accelerate as a
               result of the iXL Merger or any of the transactions contemplated
               thereby.

          (b)  Tessera Plan. At the Effective Time, all options and other
               rights to purchase iXL Common Stock (the "Tessera Options")
               pursuant to iXL's Tessera 1995 Stock Option Plan, as amended
               (the "Tessera Plan"), whether or not then vested or exercisable,
               shall terminate pursuant to Section 16(a)(ii) of the Tessera
               Plan and be forfeited, provided, however, all unvested Tessera
               Options shall accelerate and vest prior to the Effective Time.
               The Board of Directors of iXL shall provide notice thereof to
               the holders of the Tessera Options and shall take all actions
               necessary pursuant to Section 16 of the Tessera Plan to cause
               the termination of the Tessera Options as contemplated in this
               Section 2.10(b).


                                       7



          (c)  1998 Plan. At the Effective Time, all options and other rights
               to purchase iXL Common Stock (the "98 Options") pursuant to
               iXL's 1998 Non-Employee Stock Option Plan (the "98 Plan"),
               whether or not then vested or exercisable, shall terminate
               pursuant to Section 4.2(b) of the 98 Plan and be forfeited. The
               Board of Directors of iXL shall not accelerate or cause to
               become exercisable any of the 96 Options pursuant to Section 4.4
               thereof as a result of the iXL Merger or the transactions
               contemplated thereby.

          (d)  1999 Plans. At the Effective Time, Holdco shall cause all of its
               options and other rights to purchase iXL Common Stock (the "99
               Options," and together with the 96 Options, the Tessera Options,
               and the 98 Options, the "iXL Stock Options") pursuant to each of
               iXL's 1999 Employee Stock Option Plan, as amended and 1999B
               Employee Stock Option Plan, each as amended (collectively, the
               "99 Plans," and together with the 96 Plan, the Tessera Plan, and
               the 98 Plan, the "iXL Stock Plans"), whether or not then vested
               or exercisable, and to the extent (and only to the extent) they
               do not terminate by their terms at the Effective Time, to be
               exchanged for an option to purchase shares of Holdco Common
               Stock (the "Holdco Stock Options") on the same terms and
               conditions as were applicable under the 99 Option, (i) in an
               amount equal to the product obtained by multiplying the number
               of shares of iXL Common Stock issuable upon exercise of the
               respective 99 Options by the iXL Exchange Ratio, rounded, if
               necessary, down to the nearest whole share, and (ii) at a price
               per share (rounded up to the nearest 1/100th of a percent) equal
               to the per share exercise price under the respective 99 Options
               divided by the iXL Exchange Ratio; provided, however, that in
               the case of any 99 Option intended to be an incentive stock
               option under Section 422 of the Code, the foregoing shall be
               adjusted if and to the extent necessary to preserve the status
               of such options as incentive stock options.

          (e)  Stock Purchase Plan. Promptly following the date hereof, the
               Board of Directors shall take such actions as necessary to
               terminate iXL's 2000 Employee Stock Purchase Plan (the "iXL
               Purchase Plan"), pursuant to Section 8.2 thereof; provided,
               however, such termination shall be conditioned upon the
               consummation of the iXL Merger and shall be made effective as of
               the Effective Time. iXL shall provide to each Participant (of
               the iXL Purchase Plan) notice of such termination and the
               balance then credited to each Participant's Contribution Account
               (as defined in the iXL Purchase Plan) shall be distributed as
               soon as practicable following the Effective Time, without
               interest.

     2.11. iXL Warrants. Prior to the Effective Time, Holdco shall take all
action necessary to assume as of the Effective Time all warrants to purchase
shares of iXL


                                       8



Common Stock outstanding immediately prior to the Effective Time, in accordance
with the terms thereof, and shall take all requisite actions consistent
therewith, including the reservation and issuance of shares of Holdco Common
Stock sufficient to cover the exercise, in full, of such warrants.

     2.12. Certain Adjustments. If, between the date of this Agreement and the
Effective Time (and as permitted by Sections 5.1 and 5.2), the outstanding
shares of iXL Common Stock or the outstanding shares of Scient Common Stock
shall have been increased, decreased, changed into or exchanged for a different
number of shares or different class or series, in any such case, by reason of
any reclassification, recapitalization, stock split, split-up, subdivision,
combination or exchange of shares, or a stock dividend or dividend payable in
any other securities shall be declared with a record date from and after the
date of this Agreement and prior to the Effective Time, or if any similar event
shall have occurred, the applicable Merger Consideration shall be appropriately
and proportionately adjusted to provide to the holders of Scient Common Stock,
as applicable, and iXL Common Stock the same economic effect as contemplated by
this Agreement prior to such event.

                      ARTICLE 3. EXCHANGE OF CERTIFICATES

     3.1. Exchange Fund. Prior to the Effective Time, iXL and Scient shall
cause Holdco to appoint a mutually acceptable commercial bank or trust company
with assets in excess of $500,000,000 to act as exchange agent hereunder for
the purpose of exchanging Certificates for the applicable Merger Consideration
(the "Exchange Agent"). At or prior to the Effective Time, Holdco shall deposit
with the Exchange Agent, in trust for the benefit of holders of shares of
Scient Common Stock and iXL Common Stock, Certificates representing the shares
of the Holdco Common Stock issuable in the Mergers pursuant to Sections 2.7 and
2.9. Holdco agrees to make available to the Exchange Agent from time to time as
needed, cash sufficient to pay cash in lieu of fractional shares pursuant to
Section 3.5. Any cash and certificates representing Holdco Common Stock
deposited with the Exchange Agent shall hereinafter be referred to as the
"Exchange Fund."

     3.2. Exchange Procedures. Promptly after the Effective Time, Holdco shall
cause the Exchange Agent to mail to each holder of a Certificate (i) a letter
of transmittal that shall specify that delivery shall be effected, and risk of
loss and title to the Certificates shall pass, only upon proper delivery of the
Certificates to the Exchange Agent, and which letter shall be in customary form
and have such other provisions as iXL or Scient may reasonably specify (such
letter to be reasonably acceptable to Scient and iXL prior to the Effective
Time), and (ii) instructions for effecting the surrender of such Certificates
in exchange for the applicable Merger Consideration, together with any cash in
lieu of fractional shares. Upon surrender of a Certificate to the Exchange
Agent together with such letter of transmittal, duly executed and completed in
accordance with the instructions thereto, and such other documents as may
reasonably be required by the Exchange Agent, the holder of such Certificate
shall be entitled to receive in exchange therefor (A) such shares of Holdco
Common Stock (which, at Holdco's option, shall be in uncertificated book-entry
form unless a physical certificate is requested or is otherwise


                                 9



required by applicable law) representing, in the aggregate, the whole number of
shares that such holder has the right to receive pursuant to Section 2.7 or 2.9
(after taking into account all shares of Scient Common Stock and iXL Common
Stock then held by such holder), and (B) a check in the amount equal to the
cash that such holder has the right to receive in lieu of any fractional shares
of Holdco Common Stock pursuant to Section 3.5. No interest will be paid or
will accrue on any cash payable pursuant to Section 3.5. If any portion of the
Merger Consideration is to be paid to a Person other than the Person in whose
name the Certificate is registered, it shall be a condition to such payment
that the Certificate so surrendered shall be properly endorsed or otherwise be
in proper form for transfer and that the Person requesting such payment shall
pay to the Exchange Agent any transfer or other taxes required as a result of
such payment to a Person other than the registered holder of such Certificate
or establish to the satisfaction of the Exchange Agent that such tax has been
paid or is not payable.

     3.3. Dividends. No dividends, interest or other distributions with respect
to securities of Holdco shall be paid to the holder of any unsurrendered
Certificates until such Certificates are surrendered as provided in this
Article 3. Upon such surrender, there shall be paid, without interest, to the
Person in whose name the securities of Holdco have been registered, all
dividends, interest and other distributions payable in respect of such
securities on a date subsequent to, and in respect of a record date after, the
Effective Time.

     3.4. No Further Ownership Rights in Stock. All shares of Holdco Common
Stock issued and cash paid upon conversion of shares of Scient Common Stock or
iXL Common Stock in accordance with the terms of Article 2 and this Article 3
(including cash in lieu of fractional shares paid pursuant to Section 3.5)
shall be deemed to have been issued and paid in full satisfaction of all rights
pertaining to the shares of Scient Common Stock and iXL Common Stock, as
applicable.

     3.5. No Fractional Shares of Holdco Common Stock.

          (a)  No certificates or scrip or shares of Holdco Common Stock
               representing fractional shares of Holdco Common Stock or any
               interests therein or rights thereto or book-entry credit of the
               same shall be issued upon the surrender for exchange of
               Certificates and such fractional share interests will not
               entitle the owner thereof to vote or to have any rights of a
               stockholder of Holdco or a holder of shares of Holdco Common
               Stock.

          (b)  Notwithstanding any other provision of this Agreement, each
               holder of shares of Scient Common Stock or iXL Common Stock
               exchanged pursuant to the Mergers who otherwise would have been
               entitled to receive a fraction of a share of Holdco Common Stock
               (determined after taking into account all Certificates delivered
               by such holder) shall receive, in lieu thereof, cash (without
               any interest thereon) in an amount equal to the product of (x)
               such fractional part of a share of Holdco Common Stock, and


                                      10



               (y) the closing sale price for a share of Holdco Common Stock as
               reported on the Nasdaq Stock Market on the trading day next
               following the date on which the Effective Time occurs. As
               promptly as practicable after the determination of the amount of
               such cash, if any, to be paid to holders of fractional share
               interests, the Exchange Agent shall so notify Holdco, and Holdco
               shall deposit such amount with the Exchange Agent and shall
               cause the Exchange Agent to forward payments to such holders of
               fractional share interests subject to and in accordance with the
               terms hereof.

     3.6. Termination of Exchange Fund. Any portion of the Exchange Fund which
remains undistributed to the holders of Certificates for six months after the
Effective Time shall, at Holdco's request, be delivered to Holdco or otherwise
on the written instruction of Holdco, and holders of Certificates who have not
theretofore complied with this Article 3 shall after such delivery look only to
Holdco for the Merger Consideration with respect to the shares of Scient Common
Stock or iXL Common Stock, as applicable, formerly represented thereby to which
such holders are entitled pursuant to Sections 2.7, 2.9 and 3.2, and any cash
in lieu of fractional shares of Holdco Common Stock to which such holders are
entitled pursuant to Section 3.5. Any such portion of the Exchange Fund
remaining unclaimed by holders of shares of Scient Common Stock or iXL Common
Stock immediately prior to such time as such amounts would otherwise escheat to
or become property of any Governmental Entity shall, to the extent permitted by
law, become the property of Holdco, free and clear of any claims, liens or
interests of any Person previously entitled thereto.

     3.7. No Liability. Notwithstanding any provision of this Agreement to the
contrary, none of Holdco, iXL, India Merger Sub, Scient, Sierra Merger Sub or
the Exchange Agent shall be liable to any Person in respect of any Merger
Consideration or cash in lieu of fractional shares delivered to a public
official pursuant to any applicable abandoned property, escheat or similar law.

     3.8. Investment of the Exchange Fund. The Exchange Agent shall invest any
cash included in the Exchange Fund as directed by Holdco on a daily basis;
provided that no such investment or loss thereon shall affect the amounts
payable to holders of Scient Common Stock or iXL Common Stock pursuant to
Article 2 and the provisions of this Article 3. Any interest and other income
resulting from such investments shall promptly be paid to Holdco.

     3.9. Lost Certificates. If any Certificate shall have been lost, stolen or
destroyed, upon the making of an affidavit of that fact by the Person claiming
such Certificate to be so lost, stolen or destroyed and, if required by Holdco,
the posting by such Person of a bond or other collateral security in such
reasonable amount as Holdco may direct as indemnity against any claim that may
be made against it with respect to such Certificate, the Exchange Agent will
deliver in exchange for such lost, stolen or destroyed Certificate the
applicable Merger Consideration with respect to the shares of Scient Common
Stock or iXL Common Stock, as applicable, formerly represented thereby, any
cash in lieu of fractional shares of Holdco Common Stock, and any unpaid


                                      11



dividends and distributions on shares of Holdco Common Stock deliverable in
respect thereof, pursuant to this Agreement.

     3.10. Further Assurances. At and after the Effective Time, the officers
and directors of Holdco will be authorized to execute and deliver, in the name
and on behalf of iXL, India Merger Sub, Scient or Sierra Merger Sub, any deeds,
bills of sale, assignments or assurances and to take and do, in the name and on
behalf of iXL, India Merger Sub, Scient or Sierra Merger Sub, any other actions
and things to vest, perfect or confirm of record or otherwise in Holdco and/or
India Merger Sub, as the case may be, any and all right, title and interest in,
to and under any of the rights, properties or assets acquired or to be acquired
by Holdco and/or India Merger Sub, as the case may be, as a result of or in
connection with the Mergers.

     3.11. Stock Transfer Books. The stock transfer books of Scient and iXL
shall be closed immediately upon the Effective Time and there shall be no
further registration of transfers of shares of Scient Common Stock or iXL
Common Stock thereafter on the records of Scient or iXL. On and after the
Effective Time, all Certificates presented to the Exchange Agent or Holdco for
any reason shall be converted into the right to receive the applicable Merger
Consideration with respect to the shares of Scient Common Stock or iXL Common
Stock formerly represented thereby (including any cash in lieu of fractional
shares of Holdco Common Stock to which the holders thereof are entitled
pursuant to Section 3.5).

                   ARTICLE 4. REPRESENTATIONS AND WARRANTIES

     4.1. Representations and Warranties of iXL. Except as disclosed in the iXL
Filed SEC Reports or as set forth in the iXL Disclosure Schedule delivered by
iXL to Scient prior to the date hereof (the "iXL Disclosure Schedule"), iXL
represents and warrants to Scient as follows:

          (a)  Organization, Standing and Power; Subsidiaries.

               (i)  Each of iXL and its Subsidiaries is a corporation or other
                    organization duly organized, validly existing and in good
                    standing under the laws of its jurisdiction of
                    incorporation or organization, has the requisite power and
                    authority to own, lease and operate its properties and to
                    carry on its business as now being conducted, except where
                    the failure to be so organized, existing and in good
                    standing or to have such power and authority, individually
                    or in the aggregate, does not have, and would not
                    reasonably be expected to have, a Material Adverse Effect
                    on iXL, and is duly qualified and in good standing to do
                    business in each jurisdiction in which the nature of its
                    business or the ownership or leasing of its properties
                    makes such qualification necessary other than in such
                    jurisdictions


                                      12



                    where the failure so to qualify or to be in good standing,
                    individually or in the aggregate, does not have, and would
                    not reasonably be expected to have a Material Adverse
                    Effect on iXL. The copies of the certificate of
                    incorporation and bylaws of iXL and its Subsidiaries which
                    were previously furnished or made available to Scient are
                    true, complete and correct copies of such documents as in
                    effect on the date of this Agreement.

               (ii) Exhibit 21.1 to iXL's Annual Report on Form 10-K for the
                    fiscal year ended December 31, 2000, includes all the
                    Subsidiaries of iXL which as of the date of this Agreement
                    are "Significant Subsidiaries" (as defined in Rule 1-02 of
                    Regulation S-X of the Securities and Exchange Commission
                    (the "SEC")). All the outstanding shares of capital stock
                    of, or other equity and ownership interests in, each such
                    Significant Subsidiary have been validly issued and are
                    fully paid and nonassessable and, except as set forth in
                    such Exhibit 21.1, are owned directly or indirectly by iXL,
                    free and clear of all pledges, claims, liens, charges,
                    encumbrances and security interests of any kind or nature
                    whatsoever (collectively "Liens") and free of all
                    restrictions (including restrictions on the right to vote,
                    sell or otherwise dispose of such capital stock or other
                    ownership interests), except for restrictions imposed by
                    applicable U.S. Federal securities laws.

          (b)  Capital Structure.

               (i)  The authorized capital stock of iXL consists of (A)
                    200,000,000 shares of iXL Common Stock, of which 96,775,370
                    shares were outstanding on July 17, 2001, and (B) 5,000,000
                    shares of Preferred Stock, par value $0.01 per share, none
                    of which are outstanding. All issued and outstanding shares
                    of the capital stock of iXL have been duly authorized and
                    are validly issued, fully paid and nonassessable, and free
                    of preemptive rights. At the date hereof there are no
                    options, warrants or other rights to acquire any shares of
                    capital stock from iXL, other than (y) the iXL Stock
                    Options representing in the aggregate the right to purchase
                    approximately 19,000,000 shares of iXL Common Stock
                    pursuant to the iXL Stock Plans and (z) the right to
                    acquire from iXL 3,595,000 shares of iXL Common Stock
                    pursuant to those certain Warrants disclosed in Section
                    4.1(b) of the iXL Disclosure Schedule (collectively, the
                    "iXL Warrants").


                                      13



               (ii) No bonds, debentures, notes or other indebtedness of iXL
                    having the right to vote on any matters on which holders of
                    capital stock of iXL may vote ("iXL Voting Debt") are
                    issued or outstanding.

               (iii) Except as otherwise set forth in this Section 4.1(b) or in
                    Section 4.1(b) of the iXL Disclosure Schedule, there are no
                    securities, options, warrants, calls, puts, rights,
                    commitments, agreements, plans, contracts, arrangements or
                    undertakings of any kind to which iXL or any of its
                    Subsidiaries is a party or by which any of them is bound
                    obligating iXL or any of its Subsidiaries to issue, deliver
                    or sell, or cause to be issued, delivered or sold,
                    additional shares of capital stock or other voting
                    securities of iXL or any of its Subsidiaries or obligating
                    iXL or any of its Subsidiaries to issue, grant, extend or
                    enter into any such security, option, warrant, call, put,
                    right, commitment, agreement, plan, contract, arrangement
                    or undertaking. Except as disclosed in Section 4.1(b) of
                    the iXL Disclosure Schedule, there are no outstanding
                    obligations of iXL or any of its Subsidiaries to purchase,
                    redeem or otherwise acquire any shares of capital stock of
                    iXL or any of its Subsidiaries.

          (c)  Authority; No Conflicts.

               (i)  iXL has all requisite corporate power and authority to
                    enter into this Agreement and to consummate the
                    transactions contemplated hereby, subject in the case of
                    the consummation of the iXL Merger to the adoption of this
                    Agreement by the Required iXL Vote. The execution and
                    delivery of this Agreement and the consummation by iXL of
                    the transactions contemplated hereby have been duly
                    authorized by all necessary corporate action on the part of
                    iXL and no other corporate proceedings on the part of iXL
                    are necessary to authorize the execution and delivery by
                    iXL of this Agreement or to consummate the iXL Merger and
                    the other transactions contemplated hereby, subject in the
                    case of the consummation of the iXL Merger to the adoption
                    of this Agreement by the Required iXL Vote. This Agreement
                    has been duly executed and delivered by iXL and constitutes
                    the valid and binding agreement of iXL, enforceable against
                    iXL in accordance with its terms, except as such
                    enforceability may be limited by bankruptcy, insolvency,
                    reorganization, moratorium and similar laws relating to or
                    affecting creditors generally or by general equity
                    principles (regardless of whether such


                                      14



                    enforceability is considered in a proceeding in equity or
                    at law).

               (ii) The execution and delivery of this Agreement by iXL do not,
                    and the consummation by iXL of the iXL Merger and the other
                    transactions contemplated hereby will not conflict with or
                    result in any violation of or constitute a default (with or
                    without notice or lapse of time, or both) under, or give
                    rise to a right of or result by its terms in the
                    termination, amendment, cancellation or acceleration of any
                    right or obligation or the loss of a benefit under or the
                    creation of a Lien, charge, "put" or "call" right or other
                    encumbrance on or the loss of any assets, including
                    Intellectual Property (any such conflict, violation,
                    default, right of termination, amendment, cancellation or
                    acceleration, loss or creation, a "Violation"), pursuant
                    to: (A) any provision of the certificate of incorporation
                    or bylaws or similar organizational document of iXL or any
                    Significant Subsidiary of iXL, or (B) except as set forth
                    in Section 4.1(c) of the iXL Disclosure Schedule and,
                    except with respect to employee stock options and other
                    awards, and (1) as, individually or in the aggregate, would
                    not reasonably be expected to have a Material Adverse
                    Effect on iXL, or (2) would not prevent or materially delay
                    the consummation of the Mergers, subject to obtaining or
                    making the consents, waivers, approvals, orders,
                    authorizations, registrations, declarations and filings
                    referred to in clause (iii) of this Section 4.1(c), any
                    loan or credit agreement, note, mortgage, bond, indenture,
                    deed, lease, benefit plan, or any other agreement,
                    obligation, instrument, permit, concession, franchise,
                    license, judgment, order, decree, statute, law, ordinance,
                    rule or regulation applicable to iXL or any Subsidiary of
                    iXL or their respective properties or assets.

              (iii) No consent, approval, order or authorization of, or
                    registration, declaration or filing with, any
                    supranational, national, state, municipal, local or foreign
                    government, any instrumentality, subdivision, court,
                    administrative agency or commission or other authority
                    thereof, or any quasi-governmental or private body
                    exercising any regulatory, taxing, importing or other
                    governmental or quasi-governmental authority (a
                    "Governmental Entity") or any other Person is required by
                    or with respect to iXL or any Subsidiary of iXL in
                    connection with the execution and delivery of this
                    Agreement by iXL or the consummation by iXL of the iXL
                    Merger and the other transactions


                                      15



                    contemplated hereby, except for those required under or in
                    relation to (A) the Hart-Scott-Rodino Antitrust
                    Improvements Act of 1976, as amended (the "HSR Act"), (B)
                    state securities or "blue sky" laws (the "Blue Sky Laws"),
                    (C) the Securities Act of 1933, as amended (the "Securities
                    Act"), (D) the Securities Exchange Act of 1934, as amended
                    (the "Exchange Act"), (E) the DGCL with respect to the
                    filing of the Certificates of Merger, (F) the rules and
                    regulations of Nasdaq, (G) antitrust or other competition
                    laws of other jurisdictions, and (H) such other consents,
                    approvals, orders, authorizations, registrations,
                    declarations and filings the failure of which to make or
                    obtain, individually or in the aggregate, would not
                    reasonably be expected to have a Material Adverse Effect on
                    iXL. Consents, approvals, orders, authorizations,
                    registrations, declarations and filings required under or
                    in relation to any of the foregoing clauses (A) through (G)
                    are hereinafter referred to as "Necessary Consents".

          (d)  Minority Interests.

               (i)  Section 4.1(d) of the iXL Disclosure Schedule lists, as of
                    the date hereof, (A) the name of each Person (other than
                    any Person that is a Subsidiary of iXL) in which iXL or any
                    of its Subsidiaries owns any capital stock or other equity
                    interests (or any securities convertible into or
                    exercisable or exchangeable for, or options or other rights
                    to acquire, any capital stock or other equity interests in,
                    any such Person) (each such Person being hereinafter
                    referred to as an "iXL Minority Interest") and (B) the
                    current percentage ownership interest and, to the knowledge
                    of iXL, the fully diluted percentage ownership interest, in
                    each case of iXL or any of its Subsidiaries therein. Except
                    for the iXL Minority Interests, neither iXL nor any of its
                    Subsidiaries (1) owns any capital stock or other equity
                    interest (or any securities convertible into or
                    exchangeable for, or options or other rights to acquire,
                    any capital stock or other equity interest) in any Third
                    Party or (2) is obligated to make any investment in any
                    Third Party such that such Third Party would become a iXL
                    Minority Interest.

               (ii) Section 4.1(d) of the iXL Disclosure Schedule lists each
                    agreement or arrangement (x) between iXL or any of its
                    Subsidiaries, on the one hand, and any iXL Minority
                    Interest or any Person that owns any capital stock or other
                    equity interests (or any securities convertible into or


                                      16



                    exchangeable or exercisable for, or options or other rights
                    to acquire, any such capital stock or other equity
                    interests) in any iXL Minority Interest, on the other hand,
                    and (y) to which iXL or any of its Subsidiaries is a party
                    which (A) has affected or is reasonably likely to affect
                    the ability of Holdco to direct and control iXL's or its
                    Subsidiaries' interest in an iXL Minority Interest after
                    consummation of the Mergers or (B) evidences (1) any
                    commitment (whether or not contingent) for future
                    investment of capital or otherwise to be directly or
                    indirectly made by iXL or any of its Subsidiaries in any
                    iXL Minority Interest or any of its Subsidiaries or (2) any
                    other future liabilities or obligations in respect thereof
                    of iXL or any of its Subsidiaries.

          (e)  Reports and Financial Statements.

               (i)  iXL has filed all required registration statements,
                    prospectuses, notifications, reports, schedules, forms,
                    statements and other documents required to be filed by it
                    with the SEC since January 1, 2000, (collectively,
                    including all exhibits and schedules thereto, the "iXL SEC
                    Reports"). Except as set forth in Section 4.1(d) of the
                    iXL Disclosure Schedule, no Subsidiary of iXL is required
                    to file any form, report, registration statement,
                    prospectus or other document with the SEC. As of its filing
                    date (or, if amended or superseded by a filing prior to the
                    date hereof, on the date of such filing), each iXL SEC
                    Report filed pursuant to the Exchange Act did not contain
                    any untrue statement of a material fact or omit to state
                    any material fact necessary in order to make the statements
                    made therein not misleading. Each iXL SEC Report that is a
                    registration statement, as amended or supplemented, if
                    applicable, filed pursuant to the Securities Act, as of the
                    date such registration statement or amendment became
                    effective, did not contain any untrue statement of a
                    material fact or omit to state any material fact required
                    to be stated therein or necessary to make the statements
                    therein not misleading. Each of the financial statements
                    (including the related notes) included in the iXL SEC
                    Reports presents fairly, in all material respects, the
                    consolidated financial position and consolidated results of
                    operations and cash flows of iXL and its consolidated
                    Subsidiaries as of the respective dates or for the
                    respective periods set forth therein, all in conformity
                    with United States generally accepted accounting principles


                                      17



                    ("GAAP") consistently applied during the periods and at the
                    respective dates involved except as otherwise noted
                    therein, and subject, in the case of the unaudited interim
                    financial statements, to the absence of notes and normal
                    year-end adjustments that have not been and are not
                    reasonably expected to be material in amount. All of such
                    iXL SEC Reports, at their respective dates (and at the date
                    of any amendment to the respective iXL SEC Report),
                    complied as to form in all material respects with the
                    applicable requirements of the Securities Act and the
                    Exchange Act and the rules and regulations promulgated
                    thereunder.

               (ii) Except as disclosed in the iXL SEC Reports filed and
                    publicly available prior to the date hereof (the "iXL Filed
                    SEC Reports"), iXL and its Subsidiaries have not incurred
                    any liabilities that are of a nature that would be required
                    to be disclosed on a balance sheet of iXL and its
                    Subsidiaries or the footnotes thereto prepared in
                    conformity with GAAP, other than (A) liabilities incurred
                    in the ordinary course of business, (B) liabilities
                    incurred in accordance with Section 5.1, (C) liabilities
                    for Taxes, or (D) liabilities that, individually or in the
                    aggregate, would not reasonably be expected to have a
                    Material Adverse Effect on iXL.

              (iii) iXL's aggregate cash, cash equivalents, and short term
                    investments at June 30, 2001, were approximately
                    $25,578,000.00.

          (f)  Information Supplied.

               (i)  None of the information supplied or to be supplied by iXL
                    for inclusion or incorporation by reference in (A) the Form
                    S-4 will, at the time the Form S-4 is filed with the SEC,
                    at any time it is amended or supplemented or at the time it
                    becomes effective under the Securities Act or at the
                    Effective Time, contain any untrue statement of a material
                    fact or omit to state any material fact required to be
                    stated therein or necessary in order to make the statements
                    therein, not misleading, and (B) the Joint Proxy
                    Statement/Prospectus will, on the date it is first mailed
                    to Scient stockholders or iXL stockholders or at the time
                    of the Scient Stockholders Meeting or the iXL Stockholders
                    Meeting, contain any untrue statement of a material fact or
                    omit to state any material fact necessary in order to make
                    the statements therein, in light of the circumstances under
                    which they were made, not misleading. The Form S-4 and the
                    Joint Proxy Statement/Prospectus will comply when


                                      18



                    filed as to form in all material respects with the
                    requirements of the Exchange Act and the Securities Act and
                    the rules and regulations of the SEC thereunder.

               (ii) Notwithstanding the foregoing provisions of this Section
                    4.1(f), no representation or warranty is made by iXL with
                    respect to statements made or incorporated by reference in
                    the Form S-4 or the Joint Proxy Statement/Prospectus based
                    on information supplied in writing by Scient for inclusion
                    or incorporation by reference therein.

          (g)  Board Approval. The Board of Directors of iXL, by resolutions
               duly adopted and not subsequently rescinded or modified in any
               way (the "iXL Board Approval"), has duly (i) determined that
               this Agreement and the iXL Merger are fair to and in the best
               interests of iXL and its stockholders and declared the iXL
               Merger to be advisable, (ii) approved this Agreement, the Voting
               Agreements and the iXL Merger, and (iii) recommended that the
               stockholders of iXL adopt this Agreement and directed that such
               matter be submitted for consideration by iXL's stockholders at
               the iXL Stockholders Meeting.

          (h)  Anti-Takeover Statutes Not Applicable. iXL has taken (or caused
               to have been taken) and has done (or caused to have been done)
               all actions and things necessary to make this Agreement and the
               Mergers contemplated herein exempt from and not otherwise
               subject to any "control share acquisition," "business
               combination," "interested stockholder," "fair price,"
               "change-in-control," "merger moratorium," "vote sterilization,"
               or other state takeover laws of all jurisdictions applicable to
               iXL and the iXL Merger (collectively with Section 203 of the
               DGCL, "State Takeover Laws").

          (i)  Vote Required. The affirmative vote of the holders of a majority
               of the outstanding shares of iXL Common Stock to adopt this
               Agreement (the "Required iXL Vote") is the only vote of the
               holders of any class or series of iXL capital stock necessary to
               adopt this Agreement and to consummate the iXL Merger and the
               other transactions contemplated hereby.

          (j)  Litigation; Compliance with Laws.

               (i)  Except as set forth in Section 4.1(j) of the iXL Disclosure
                    Schedule, there are no suits, actions, judgments or
                    proceedings (collectively, "Actions") pending or, to the
                    knowledge of iXL, threatened, against or affecting iXL or
                    any Subsidiary of iXL or any property or asset of iXL or
                    any Subsidiary of iXL which, individually or in the


                                      19



                    aggregate, would reasonably be expected to have a Material
                    Adverse Effect on iXL, nor are there any judgments,
                    decrees, injunctions, rules or orders of any Governmental
                    Entity or arbitrator outstanding against iXL or any
                    Subsidiary of iXL which, individually or in the aggregate,
                    would reasonably be expected to have a Material Adverse
                    Effect on iXL.

               (ii) Except as, individually or in the aggregate, would not
                    reasonably be expected to have a Material Adverse Effect on
                    iXL, iXL and its Subsidiaries have been issued and hold all
                    permits, licenses, franchises, variances, exemptions,
                    waivers, orders and approvals of all Governmental Entities
                    which are necessary for the operation of the businesses as
                    now being conducted of iXL and its Subsidiaries, taken as a
                    whole (the "iXL Permits"), and no suspension or
                    cancellation of any of the iXL Permits is pending or, to
                    the knowledge of iXL, threatened. iXL and its Subsidiaries
                    are in compliance with the terms of the iXL Permits, except
                    where the failure to so comply, individually or in the
                    aggregate, would not reasonably be expected to have a
                    Material Adverse Effect on iXL. Neither iXL nor its
                    Subsidiaries is in violation of, and iXL and its
                    Subsidiaries have not received any notices of violations
                    with respect to, any laws, statutes, ordinances, rules or
                    regulations of any Governmental Entity, except for
                    violations which, individually or in the aggregate, would
                    not reasonably be expected to have a Material Adverse
                    Effect on iXL.

          (k)  Absence of Certain Changes or Events. Except as disclosed in
               Section 4.1(k) of the iXL Disclosure Schedule and for
               liabilities expressly permitted to be incurred in accordance
               with this Agreement or directly incidental to the transactions
               contemplated by the Mergers, since December 31, 2000, iXL and
               its Subsidiaries have conducted their business only in the
               ordinary course and in a manner consistent with past practice
               and, since such date, there has not been:

               (i)  any change, circumstance, state of facts or event which,
                    individually or in the aggregate, has had, or reasonably
                    could be expected to have, a Material Adverse Effect on
                    iXL;

               (ii) any declaration, setting aside or payment of any dividend
                    or other distribution with respect to any shares of capital
                    stock of iXL, or any repurchase, redemption or other
                    acquisition by iXL or any of its Subsidiaries of any


                                      20



                    outstanding shares of capital stock or other securities of,
                    or other ownership interests in, iXL or any of its
                    Subsidiaries;

              (iii) any amendment of any material term of any outstanding
                    security of iXL or any of its Subsidiaries;

               (iv) any incurrence, assumption or guarantee by iXL or any of
                    its Subsidiaries of any indebtedness for borrowed money;

                (v) any creation or other incurrence by iXL or any of its
                    Subsidiaries of any Lien on any material asset other than
                    in the ordinary course of business consistent with past
                    practices;

               (vi) any making of any loan, advance or capital contribution to
                    or investment in any Person other than loans, advances or
                    capital contributions to or investments in its wholly-owned
                    Subsidiaries in the ordinary course of business consistent
                    with past practices;

              (vii) any transaction or commitment made, or any contract or
                    agreement entered into, by iXL or any of its Subsidiaries
                    relating to its assets or business (including the
                    acquisition or disposition of any assets) or any
                    relinquishment by iXL or any of its Subsidiaries of any
                    contract or other right, in either case, material to iXL
                    and its Subsidiaries, taken as a whole, other than
                    transactions and commitments in the ordinary course of
                    business consistent with past practices and those expressly
                    contemplated by this Agreement;

             (viii) any change in any method of accounting, method of tax
                    accounting or accounting principles or practice by iXL or
                    any of its Subsidiaries, except for any such change
                    required by reason of a concurrent change in GAAP or
                    Regulation S-X under the Exchange Act;

               (ix) any (A) grant of any severance or termination pay to (or
                    amendment to any existing arrangement with) any director,
                    officer or employee of iXL or any of its Subsidiaries, (B)
                    increase in compensation, bonus or other benefits payable
                    to any director, officer or employee of iXL or any of its
                    Subsidiaries, other than in the ordinary course of business
                    consistent with past practices, (C) increase in benefits
                    payable under any existing severance or termination pay
                    policies or employment agreements, (D) entering into any
                    employment, deferred compensation or other similar
                    agreement (or any amendment to any such existing


                                      21



                    agreement) with any director, officer or employee of iXL or
                    any of its Subsidiaries, or (E) establishment, adoption or
                    amendment (except as required by applicable law) of any
                    collective bargaining, bonus, profit-sharing, thrift,
                    pension, retirement, deferred compensation, compensation,
                    stock option, restricted stock or other benefit plan or
                    arrangement covering any director, officer or employee of
                    iXL or any of its Subsidiaries; or

               (x)  any material Tax election made or changed, any annual tax
                    accounting period changed, any method of tax accounting
                    adopted or changed, any material amended Tax Returns or
                    claims for material Tax refunds filed, any material closing
                    agreement entered into, any material Tax claim, Audit or
                    assessment settled, or any right to claim a material Tax
                    refund, offset or other reduction in Tax liability
                    surrendered.

          (l)  Intellectual Property. Except as would not, individually or in
               the aggregate, reasonably be expected to have a Material Adverse
               Effect on iXL: (i) iXL and/or each of its Subsidiaries owns, or
               is licensed to use (in each case, free and clear of any Liens),
               all Intellectual Property used in or necessary for the conduct
               of its business as currently conducted; (ii) to the knowledge of
               iXL, the use of any Intellectual Property by iXL and/or its
               Subsidiaries does not infringe on or otherwise violate the
               rights of any Person, (iii) the use of the Intellectual Property
               is in accordance with subsisting and enforceable licenses
               pursuant to which iXL or any Subsidiary acquired the right to
               use any Intellectual Property; and (iv) to the knowledge of iXL,
               no Person is challenging, infringing or otherwise violating any
               right of iXL or any of its Subsidiaries with respect to any
               Intellectual Property owned by and/or licensed to iXL or its
               Subsidiaries. At the date of this Agreement, except as would not
               reasonably be expected, individually or in the aggregate, to
               have a Material Adverse Effect on iXL, neither iXL nor any of
               its Subsidiaries has knowledge of any pending claim, order or
               proceeding with respect to any Intellectual Property used by iXL
               and its Subsidiaries and to its knowledge no Intellectual
               Property owned and/or licensed by iXL or its Subsidiaries is
               being used or enforced in a manner that would reasonably be
               expected to result in the abandonment, cancellation or
               unenforceability of such Intellectual Property.

               None of the Intellectual Property or other know-how relating to
               the business of iXL and/or its Subsidiaries, the value of which
               to iXL is contingent upon maintenance of the confidentiality
               thereof has been disclosed by iXL or any of its Affiliates to
               any Person other


                                      22



               than those Persons who are bound to hold such information in
               confidence pursuant to confidentiality agreements or by
               operation of law, except insofar as such disclosures would not,
               individually or in the aggregate, reasonably be expected to have
               a Material Adverse Effect on iXL. Neither iXL nor any of its
               Subsidiaries are party to any contract that restricts or
               otherwise limits the ability of iXL or such Subsidiary to
               perform services for any other Person. To the knowledge of iXL,
               each employee of iXL and its Subsidiaries is a party to an
               agreement substantially similar to the "iXL Employee
               Nonsolicitation and Confidentiality Agreement" made available to
               Scient prior to the date hereof.

          (m)  Brokers or Finders. Other than First Union Securities, Inc., and
               Credit Suisse First Boston Corporation, iXL's financial
               advisors, no agent, broker, investment banker, financial advisor
               or other firm or Person is or will be entitled to any broker's
               or finder's fee or any other similar commission or fee in
               connection with any of the transactions contemplated by this
               Agreement based upon arrangements made by or on behalf of iXL.

          (n)  Opinion of iXL Financial Advisor. iXL's Board of Directors has
               received the opinion of First Union Securities, Inc. dated the
               date of this Agreement, to the effect that, at such date, the
               iXL Exchange Ratio is fair, from a financial point of view, to
               the holders of iXL Common Stock. A copy of such opinion will be
               made available to Scient promptly after the date of this
               Agreement, and such opinion has not been modified or withdrawn.

          (o)  Taxes. Each of iXL and its Subsidiaries has filed all Tax
               Returns required to have been filed (or extensions have been
               duly obtained) and has paid all Taxes required to have been paid
               by it (or has established in accordance with GAAP an adequate
               accrual for all material Taxes through the end of the last
               period for when iXL and its Subsidiaries ordinarily record items
               on their respective books), except where failure to file such
               Tax Returns or pay such Taxes would not, individually or in the
               aggregate, reasonably be expected to have a Material Adverse
               Effect on iXL. All such Tax Returns are, or will be at the time
               of filing, true and complete in all material respects. No Audit
               is pending or threatened with respect to any Tax Returns filed
               by, or Taxes due from, iXL or any of its Subsidiaries. There is
               no current deficiency or adjustment for any Taxes proposed,
               asserted or assessed against the Company or any of its
               Subsidiaries. There are no material Liens for Taxes upon the
               assets of the Company or any of its Subsidiaries, except for
               statutory Liens for current Taxes not yet due and those being
               contested in good faith. Neither iXL nor any of its Subsidiaries
               owns an interest in real property in any jurisdiction in which a
               Tax


                                      23



               is imposed, or the value of the interest is reassessed, on the
               transfer of an interest in real property and which treats the
               transfer of an interest in an entity that owns an interest in
               real property as a transfer of the interest in real property.
               Neither iXL nor any of its Subsidiaries has taken any action or
               knows of any fact that is reasonably likely to prevent the
               Mergers from qualifying as reorganizations within the meaning of
               Section 368(a) of the Code.

          (p)  Material Contracts.

               (i)  Except for the contracts, leases, licenses, commitments,
                    and other instruments (collectively, the "iXL Contracts")
                    specifically disclosed in the iXL SEC Reports filed with
                    the SEC prior to the date of this Agreement, or as
                    disclosed at Section 4.1(p) on the iXL Disclosure Schedule,
                    as of the date hereof, neither iXL nor any of its
                    Subsidiaries is a party to or bound by: (I) any
                    partnership, joint venture or other similar agreement or
                    arrangement (other than any such agreement or arrangement
                    disclosed in Section 4.1(d) of the iXL Disclosure Schedule)
                    that, if the transactions contemplated thereby were
                    consummated, would result in iXL or any of its Subsidiaries
                    being a partner, member or equity owner or participant of
                    or in any partnership, joint venture, or similar entity or
                    result in an iXL Minority Interest; (II) any agreement
                    relating to indebtedness for borrowed money or the deferred
                    purchase price of property (in either case whether
                    incurred, assumed, guaranteed or secured by an asset); or
                    (III) any agreement containing any provision or covenant
                    limiting in any respect the ability of iXL or any of its
                    Subsidiaries or any Affiliate of iXL or Holdco, Scient or
                    any successor of iXL after the Effective Time to compete in
                    any manner (with respect to the businesses conducted on the
                    date hereof and intended to be conducted after the
                    Effective Time by the parties hereto) with any Person in
                    any geographic area.

               (ii) Each iXL Contract specifically disclosed in any iXL SEC
                    Report or required to be disclosed pursuant to this Section
                    4.1(p) is valid and in full force and effect, except to the
                    extent they have previously expired in accordance with
                    their terms or the failure to so be in full force and
                    effect, individually or in the aggregate, would not
                    reasonably be expected to have a Material Adverse Effect on
                    iXL. Neither iXL nor any of its Subsidiaries has violated
                    any provision of, or committed or failed to perform any act
                    which with or without notice, lapse of time or both would


                                      24



                    constitute a default under the provisions of, any such
                    contract, except in each case for those violations and
                    defaults which, individually or in the aggregate, would not
                    reasonably be expected to result in a Material Adverse
                    Effect on iXL.

          (q)  Employee Benefits.

               (i)  Prior to the date hereof, iXL has made available to Scient
                    each "employee benefit plan", as defined in ERISA, and each
                    plan or other arrangement (written or oral) (including
                    employment and severance agreements) providing for
                    compensation, bonuses, profit-sharing, stock option or
                    other equity-related rights or other forms of incentive or
                    deferred compensation, employee loans, vacation benefits,
                    insurance coverage (including any self-insured
                    arrangements), health, medical, dental or vision benefits,
                    disability benefits, workers' compensation, supplemental
                    unemployment benefits, severance benefits and
                    post-employment or retirement benefits (including
                    compensation, pension, health, medical, or life insurance
                    benefits), in each case which is maintained, administered,
                    or contributed to by iXL or any ERISA Affiliate thereof and
                    covers any employee, director or independent contractor or
                    former employee, director or independent contractor of iXL
                    or any ERISA Affiliate thereof or under which iXL or any
                    ERISA Affiliate thereof has any liability with respect to
                    current or former employees, directors or independent
                    contractors of iXL or any ERISA Affiliate thereof. Copies
                    of such plans or other arrangements (and, if applicable,
                    related trust agreements) and all amendments thereto and
                    written interpretations thereof have been made available to
                    Scient prior to the date hereof together with the most
                    recent annual report (Form 5500 Annual Report including, if
                    applicable, Schedule B thereto) prepared in connection with
                    any such plan or other arrangement. Such plans or other
                    arrangements are referred to collectively as the "iXL
                    Benefit Plans"; provided that a plan or other arrangement
                    with respect to a former employee, director or independent
                    contractor shall constitute an "iXL Benefit Plan" only to
                    the extent that iXL or its ERISA Affiliate has any present
                    or future liability or obligation. An "ERISA Affiliate" of
                    any person means any other person which, together with such
                    person, would be treated as a single employer under Section
                    414 of the Code. At no time has iXL or any person who from
                    time to time is or was an ERISA Affiliate of iXL ever
                    maintained an employee


                                      25



                    benefit plan that is subject to Title IV of ERISA. Section
                    4.1(q) of the iXL Disclosure Schedule lists each material
                    iXL Benefit Plan.

               (ii) Except as would not, individually or in the aggregate,
                    reasonably be expected to have a Material Adverse Effect on
                    iXL, each of the iXL Benefit Plans, and the administration
                    thereof, is, and has been, in compliance with the
                    requirements provided by any and all applicable statutes,
                    orders or governmental rules or regulations currently in
                    effect, including, but not limited to, ERISA and the Code.
                    Each iXL Benefit Plan and its related trust which is
                    intended to qualify under Section 401(a) and Section 501(a)
                    of the Code is so qualified, and nothing has occurred to
                    cause the loss of such qualification. iXL has made
                    available to Scient copies of the most recent Internal
                    Revenue Service determination letters with respect to each
                    such iXL Benefit Plan, if any. Each iXL Benefit Plan which
                    is intended to be exempt under Section 501(c)(9) or
                    501(c)(17) of the Code satisfies the requirements for such
                    exemption, so qualifies in form and in operation, and
                    meets, or has satisfied, the requirements of Section 505(c)
                    of the Code and the regulations thereunder.

              (iii) Except as set forth in Section 4.1(q) of the iXL
                    Disclosure Schedule, with respect to each iXL Benefit Plan,
                    there are no funded benefit obligations for which
                    contributions have not been made or properly accrued and
                    there are no unfunded benefit obligations which have not
                    been accounted for by reserves, or otherwise properly
                    footnoted in accordance with GAAP, on the iXL SEC Reports,
                    which obligations are reasonably likely, individually or in
                    the aggregate, to have a Material Adverse Effect on iXL.

               (iv) Except as would not, individually or in the aggregate,
                    reasonably be expected to have a Material Adverse Effect on
                    iXL, with respect to each iXL Benefit Plan (A) no
                    prohibited transactions as defined in Section 406 of ERISA
                    or Section 4975 of the Code have occurred or are expected
                    to occur as a result of the transactions contemplated by
                    this Agreement, and (B) no action, suit, grievance,
                    arbitration or other manner of litigation, or claim with
                    respect to the assets thereof of any iXL Benefit Plan
                    (other than routine claims for benefits made in the
                    ordinary course of plan administration for which plan
                    administrative review procedures have not been exhausted)
                    is pending, threatened or imminent against or with respect
                    to any of


                                      26



                    the iXL Benefit Plans, iXL, any ERISA Affiliate or any
                    fiduciary, as such term is defined in Section 3(21) of
                    ERISA ("Fiduciary"), including but not limited to any --
                    action, suit, grievance, arbitration or other manner of
                    litigation, or claim regarding conduct that allegedly
                    interferes with the attainment of rights under any iXL
                    Benefit Plans. Except as would not, individually or in the
                    aggregate, reasonably be expected to have a Material
                    Adverse Effect on iXL, none of iXL or its directors,
                    officers, or employees, or any Fiduciary has any liability
                    for failure to comply with ERISA or the Code for any action
                    or failure to act in connection with the administration or
                    investment of such plans.

                (v) No iXL Benefit Plan is a multiemployer plan within the
                    meaning of Section 3(37) of ERISA.

               (vi) iXL and its Subsidiaries are in compliance with all
                    federal, state, local and foreign requirements regarding
                    employment, except for any failures to comply that are not
                    reasonably likely, individually or in the aggregate, to
                    have a Material Adverse Effect on iXL. As of the date of
                    this Agreement, there is no labor dispute, strike or work
                    stoppage against iXL or any of its Subsidiaries pending or,
                    to the knowledge of iXL, threatened which may interfere
                    with the business activities of iXL or any of its
                    Subsidiaries, except where such dispute, strike or work
                    stoppage is not reasonably likely, individually or in the
                    aggregate, to have a Material Adverse Effect on iXL.

              (vii) Except as set forth in Section 4.1(q) of the iXL
                    Disclosure Schedule, no employee of iXL or any of its
                    Subsidiaries will become entitled to any change-in-control,
                    retirement, severance, retention or similar benefit or
                    enhanced or accelerated benefit or any forgiveness of an
                    outstanding advance or loan as a result of the transactions
                    contemplated hereby (either solely as a result thereof or
                    as a result of such transactions in conjunction with any
                    other event). Without limiting the generality of the
                    foregoing, no amount required to be paid or payable to or
                    with respect to any employee of iXL or any of its
                    Subsidiaries in connection with the transactions
                    contemplated hereby (either solely as a result thereof or
                    as a result of such transactions in conjunction with any
                    other event) will, to the knowledge of iXL or any of its
                    Subsidiaries, be an "excess parachute payment" within the
                    meaning of Section 280G of the Code.


                                      27



             (viii) There has been no amendment to, written interpretation or
                    announcement (whether or not written) by iXL or any of its
                    ERISA Affiliates relating to, or change in participation or
                    coverage under, any iXL Benefit Plan which would increase
                    materially the expense of maintaining such iXL Benefit Plan
                    above the level of the expense incurred in respect thereof
                    for the twelve months ended on June 30, 2001.

          (r)  Insurance. All material fire, property and casualty, general
               liability, errors and omissions, business interruption, product
               liability, and sprinkler and water damage insurance policies
               maintained by iXL or any of its Subsidiaries are with reputable
               insurance carriers, provide full and adequate coverage for all
               normal risks incident to the businesses of iXL and its
               Subsidiaries and their respective properties and assets, and are
               in character and amount at least equivalent to that carried by
               persons engaged in similar businesses and subject to the same or
               similar perils or hazards, except for any such failures to
               maintain insurance policies that, individually or in the
               aggregate, would not have a Material Adverse Effect on iXL. iXL
               and each of its Subsidiaries have made any and all payments
               required to maintain such policies in full force and effect.
               Except as set forth in Section 4.1(r) of the iXL Disclosure
               Schedule, neither iXL nor any of its Subsidiaries has received
               notice of default under any such policy, and has not received
               written notice, or, to the knowledge of iXL, oral notice of any
               pending or threatened termination or cancellation, denial of
               coverage or limitation or reduction of coverage or material
               premium increase with respect to such policy.

          (s)  Transactions with Related Persons.

               (i)  Section 4.1(s) of the iXL Disclosure Schedule sets forth a
                    list of all agreements in effect with Related Persons and
                    not required to be disclosed in the iXL SEC Reports
                    pursuant to Item 404 of Regulation S-K. Except as set forth
                    in Section 4.1(s) of the iXL Disclosure Schedule or the iXL
                    SEC Reports, since December 31, 2000, neither iXL nor any
                    of its Subsidiaries has (I) purchased, leased or otherwise
                    acquired any material property or assets or obtained any
                    material services from, (II) sold, leased or otherwise
                    disposed of any material property or assets or provided any
                    material services to (except with respect to remuneration
                    for services rendered in the ordinary course of business as
                    director, officer or employee of iXL or any of its
                    Subsidiaries), (III) entered into or modified in any manner
                    any contract or other agreement with, or (IV)


                                      28



                    borrowed any money from, or made or forgiven any loan or
                    other advance (other than expenses or similar advances made
                    in the ordinary course of business) to, any officer,
                    director, or Affiliate (collectively, "iXL Related
                    Persons"). Prior to the date hereof, iXL has made available
                    to Scient true and complete copies of each contract,
                    arrangement and understanding between iXL or any of its
                    Subsidiaries, on the one hand, and any iXL Related Person,
                    on the other.

               (ii) Except as set forth in Section 4.1(s) of the iXL Disclosure
                    Schedule, (x) the contracts of iXL and its Subsidiaries do
                    not include any material obligation or commitment between
                    iXL or any of its Subsidiaries and any iXL Related Person,
                    (y) the assets of iXL or any of its Subsidiaries do not
                    include any receivable or other obligation or commitment
                    from an iXL Related Person to iXL or any of its
                    Subsidiaries, and (z) the liabilities of iXL and its
                    Subsidiaries do not include any payable or other obligation
                    or commitment from iXL or any of its Subsidiaries to any
                    iXL Related Person.

              (iii) Except as set forth in Section 4.1(s) of the iXL
                    Disclosure Schedule, no iXL Related Person is a party to
                    any contract with any customer or supplier of iXL or any of
                    its Subsidiaries that affects in any material manner the
                    business, financial condition or results of operation of
                    iXL or any of its Subsidiaries.

          (t)  Leased Properties iXL does not own a fee interest in any real
               property. Section 4.1(t) of the iXL Disclosure Schedule
               correctly describes all real property which iXL leases as a
               tenant, subleases (whether as sublandlord or subtenant), or
               otherwise occupies ("iXL Leased Properties"). iXL has a valid
               leasehold interest in all iXL Leased Properties.

     4.2. Representations and Warranties of Scient. Except as disclosed in the
Scient Filed SEC Reports or as - set forth in the Scient Disclosure Schedule
delivered by Scient to iXL prior to the execution of this Agreement (the
"Scient Disclosure Schedule"), Scient represents and warrants to iXL as
follows:

          (a)  Organization, Standing and Power; Subsidiaries.

               (i)  Each of Scient and its Subsidiaries is a corporation or
                    other organization duly organized, validly existing and in
                    good standing under the laws of its jurisdiction of
                    incorporation or organization, has the requisite power and
                    authority to own, lease and operate its properties and to
                    carry on its


                                      29



                    business as now being conducted, except where the failure
                    to be so organized, existing and in good standing or to
                    have such power and authority, individually or in the
                    aggregate, does not have, and would not reasonably be
                    expected to have, a Material Adverse Effect on Scient, and
                    is duly qualified and in good standing to do business in
                    each jurisdiction in which the nature of its business or
                    the ownership or leasing of its properties makes such
                    qualification necessary other than in such jurisdictions
                    where the failure so to qualify or to be in good standing,
                    individually or in the aggregate, does not have, and would
                    not reasonably be expected to have, a Material Adverse
                    Effect on Scient. The copies of the certificate of
                    incorporation and bylaws of Scient and its Subsidiaries
                    which were previously furnished or made available to iXL
                    are true, complete and correct copies of such documents as
                    in effect on the date of this Agreement.

               (ii) Exhibit 21.1 to Scient's Annual Report on Form 10-K for the
                    year ended March 31, 2001, includes all the Subsidiaries of
                    Scient which as of the date of this Agreement are
                    Significant Subsidiaries. All the outstanding shares of
                    capital stock of, or other equity and ownership interests
                    in, each such Significant Subsidiary have been validly
                    issued and are fully paid and nonassessable and, except as
                    set forth in such Exhibit 21.1, are owned directly or
                    indirectly by Scient, free and clear of all Liens and free
                    of all restrictions (including restrictions on the right to
                    vote, sell or otherwise dispose of such capital stock or
                    other ownership interests), except for restrictions imposed
                    by applicable U.S. Federal securities laws.

          (b)  Capital Structure.

               (i)  The authorized capital stock of Scient consists of (a)
                    500,000,000 shares of Scient Common Stock, of which
                    74,345,915 shares are outstanding on July 26, 2001, and (B)
                    10,000,000 shares of Preferred Stock, par value $0.0001 per
                    share, of which (1) 100,000 shares have been designated
                    Series A Junior Participating Preferred Stock, of which no
                    shares are outstanding. All issued and outstanding shares
                    of the capital stock of Scient have been duly authorized
                    and are validly issued, fully paid and nonassessable, and
                    free of preemptive rights. At the date hereof, there are no
                    options, warrants or other rights to acquire any shares of
                    capital stock from Scient other than


                                      30



                    the Scient Stock Options representing in the aggregate the
                    right to purchase 9,932,261 shares of Scient Common Stock
                    pursuant to the Scient Stock Plans on June 30, 2001.

               (ii) No bonds, debentures, notes or other indebtedness of Scient
                    having the right to vote on any matters on which holders of
                    capital stock of Scient may vote ("Scient Voting Debt") are
                    issued or outstanding.

              (iii) Except as otherwise set forth in this Section 4.2(b) or in
                    Section 4.2(b) of the Scient Disclosure Schedule, there are
                    no securities, options, warrants, calls, puts, rights,
                    commitments, agreements, plans, contracts, arrangements or
                    undertakings of any kind to which Scient or any of its
                    Subsidiaries is a party or by which any of them is bound
                    obligating Scient or any of its Subsidiaries to issue,
                    deliver or sell, or cause to be issued, delivered or sold,
                    additional shares of capital stock or other voting
                    securities of Scient or any of its Subsidiaries or
                    obligating Scient or any of its Subsidiaries to issue,
                    grant, extend or enter into any such security, option,
                    warrant, call, put, right, commitment, agreement, plan,
                    contract, arrangement or undertaking. Except as disclosed
                    in Section 4.2(b) of the Scient Disclosure Schedule, there
                    are no outstanding obligations of Scient or any of its
                    Subsidiaries to purchase, redeem or otherwise acquire any
                    shares of capital stock of Scient or any of its
                    Subsidiaries.

          (c)  Authority; No Conflicts.

               (i)  Scient has all requisite corporate power and authority to
                    enter into this Agreement and to consummate the
                    transactions contemplated hereby, subject in the case of
                    the consummation of the Scient Merger to the adoption of
                    this Agreement by the Required Scient Vote. The execution
                    and delivery of this Agreement and the consummation by
                    Scient of the transactions contemplated hereby have been
                    duly authorized by all necessary corporate action on the
                    part of Scient and no other corporate proceedings on the
                    part of Scient are necessary to authorize the execution and
                    delivery by Scient of this Agreement or to consummate the
                    Scient Merger and the other transactions contemplated
                    hereby, subject in the case of the consummation of the
                    Scient Merger to the adoption of this Agreement by the
                    Required Scient Vote. This Agreement has been duly executed
                    and delivered by Scient and constitutes the valid and
                    binding agreement of Scient, enforceable against


                                      31



                    Scient in accordance with its terms, except as such
                    enforceability may be limited by bankruptcy, insolvency,
                    reorganization, moratorium and similar laws relating to or
                    affecting creditors generally or by general equity
                    principles (regardless of whether such enforceability is
                    considered in a proceeding in equity or at law).

               (ii) The execution and delivery of this Agreement by Scient do
                    not, and the consummation by Scient of the Scient Merger
                    and the other transactions contemplated hereby will not,
                    conflict with or result in a Violation pursuant to: (A) any
                    provision of the certificate of incorporation or bylaws or
                    similar organizational document of Scient or any
                    Significant Subsidiary of Scient, or (B) except as set
                    forth in Section 4.2(c) of the Scient Disclosure Schedule
                    and, except with respect to employee stock options and
                    other awards, or (1) as, individually or in the aggregate,
                    would not reasonably be expected to have a Material Adverse
                    Effect on Scient, or (2) would not prevent or materially
                    delay the consummation of the Mergers, subject to obtaining
                    or making the consents, waivers, approvals, orders,
                    authorizations, registrations, declarations and filings
                    referred to in clause

              (iii) of this Section 4.2(c), any loan or credit agreement,
                    note, mortgage, bond, indenture, deed, lease, benefit plan,
                    or any other agreement, obligation, instrument, permit,
                    concession, franchise, license, judgment, order, decree,
                    statute, law, ordinance, rule or regulation applicable to
                    Scient or any Subsidiary of Scient or their respective
                    properties or assets. (iii) No consent, approval, order or
                    authorization of, or registration, declaration or filing
                    with, any Governmental Entity or any other Person is
                    required by or with respect to Scient or any Subsidiary of
                    Scient in connection with the execution and delivery of
                    this Agreement by Scient or the consummation by Scient of
                    the Scient Merger and the other transactions contemplated
                    hereby, except the Necessary Consents and such other
                    consents, approvals, orders, authorizations, registrations,
                    declarations and filings the failure of which to make or
                    obtain, individually or in the aggregate, would not
                    reasonably be expected to have a Material Adverse Effect on
                    Scient.

          (d)  Minority Interests.

               (i)  Section 4.2(d) of the Scient Disclosure Schedule lists, as
                    of the date hereof, (A) the name of each Person (other than


                                      32



                    any Person that is a Subsidiary of Scient) in which Scient
                    or any of its Subsidiaries owns any capital stock or other
                    equity interests (or any securities convertible into or
                    exercisable or exchangeable for, or options or other rights
                    to acquire, any capital stock or other equity interests in,
                    any such Person) (each such Person being hereinafter
                    referred to as a "Scient Minority Interest") and (B) the
                    current percentage ownership interest and, to the knowledge
                    of Scient, the fully diluted percentage ownership interest,
                    in each case of Scient or any of its Subsidiaries therein.
                    Except for the Scient Minority Interests, neither Scient
                    nor any of its Subsidiaries (1) owns any capital stock or
                    other equity interest (or any securities convertible into
                    or exchangeable for, or options or other rights to acquire,
                    any capital stock or other equity interest) in any Third
                    Party or (2) is obligated to make any investment in any
                    Third Party such that such Third Party would become a
                    Scient Minority Interest.

               (ii) Section 4.2(d) of the Scient Disclosure Schedule lists each
                    agreement or arrangement (x) between Scient or any of its
                    Subsidiaries, on the one hand, and any Scient Minority
                    Interest or any Person that owns any capital stock or other
                    equity interests (or any securities convertible into or
                    exchangeable for, or options or other rights to acquire,
                    any such capital stock or other equity interests) in any
                    Scient Minority Interest, on the other hand, and (y) to
                    which Scient or any of its Subsidiaries is a party which
                    (A) has affected or is reasonably likely to affect the
                    ability of Holdco to direct and control Scient's or its
                    Subsidiaries' interest in a Scient Minority Interest after
                    consummation of the Mergers or (B) evidences (1) any
                    commitment (whether or not contingent) for future
                    investment of capital or otherwise to be directly or
                    indirectly made by Scient or any of its Subsidiaries in any
                    Scient Minority Interest or any of its Subsidiaries or (2)
                    any other future liabilities or obligations in respect
                    thereof of Scient or any of its Subsidiaries.

          (e)  Reports and Financial Statements.

               (i)  Scient has filed all required registration statements,
                    prospectuses, notifications, reports, schedules, forms,
                    statements and other documents required to be filed by it
                    with the SEC since January 1, 2000 (collectively, including
                    all exhibits and schedules thereto, the "Scient SEC
                    Reports"). Except as set forth in Section 4.2(e)(i) of


                                      33



                    the Scient Disclosure Schedule, no Subsidiary of Scient is
                    required to file any form, report, registration statement,
                    prospectus or other document with the SEC. As of its filing
                    date (or, if amended or superseded by a filing prior to the
                    date hereof, on the date of such filing), each Scient SEC
                    Report filed pursuant to the Exchange Act did not contain
                    any untrue statement of a material fact or omit to state
                    any material fact necessary in order to make the statements
                    made therein, not misleading. Each Scient SEC Report that
                    is a registration statement, as amended or supplemented, if
                    applicable, filed pursuant to the Securities Act, as of the
                    date such registration statement or amendment became
                    effective, did not contain any untrue statement of a
                    material fact or omit to state any material fact required
                    to be stated therein or necessary to make the statements
                    therein not misleading. Each of the financial statements
                    (including the related notes) included in the Scient SEC
                    Reports presents fairly, in all material respects, the
                    consolidated financial position and consolidated results of
                    operations and cash flows of Scient and its consolidated
                    Subsidiaries as of the respective dates or for the
                    respective periods set forth therein, all in conformity
                    with GAAP consistently applied during the periods and at
                    the respective dates involved except as otherwise noted
                    therein, and subject, in the case of the unaudited interim
                    financial statements, to the absence of notes and normal
                    year-end adjustments that have not been and are not
                    reasonably expected to be material in amount. All of such
                    Scient SEC Reports, at their respective dates (and at the
                    date of any amendment to the respective Scient SEC Report),
                    complied as to form in all material respects with the
                    applicable requirements of the Securities Act and the
                    Exchange Act and the rules and regulations promulgated
                    thereunder.

               (ii) Except as disclosed in the Scient SEC Reports filed and
                    publicly available prior to the date hereof (the "Scient
                    Filed SEC Reports"), Scient and its Subsidiaries have not
                    incurred any liabilities that are of a nature that would be
                    required to be disclosed on a balance sheet of Scient and
                    its Subsidiaries or the footnotes thereto prepared in
                    conformity with GAAP, other than (A) liabilities incurred
                    in the ordinary course of business, (B) liabilities
                    incurred in accordance with Section 5.2, (C) liabilities
                    for Taxes, or (D) liabilities that, individually or in the
                    aggregate, would not reasonably be expected to have a
                    Material Adverse Effect on Scient.


                                      34



              (iii) Scient's cash, cash equivalents, and short term
                    investments at June 30, 2001 were approximately
                    $115,124,000.

          (f)  Information Supplied.

               (i)  None of the information supplied or to be supplied by
                    Scient for inclusion or incorporation by reference in (A)
                    the Form S-4 will, at the time the Form S-4 is filed with
                    the SEC, at any time it is amended or supplemented or at
                    the time it becomes effective under the Securities Act or
                    at the Effective Time, contain any untrue statement of a
                    material fact or omit to state any material fact required
                    to be stated therein or necessary in order to make the
                    statements therein not misleading, and (B) the Joint Proxy
                    Statement/Prospectus will, on the date it is first mailed
                    to Scient stockholders or iXL stockholders or at the time
                    of the Scient Stockholders Meeting or the iXL Stockholders
                    Meeting, contain any untrue statement of a material fact or
                    omit to state any material fact or necessary in order to
                    make the statements therein, in light of the circumstances
                    under which they were made, not misleading. The Form S-4
                    and the Joint Proxy Statement/Prospectus will comply when
                    filed as to form in all material respects with the
                    requirements of the Exchange Act and the Securities Act and
                    the rules and regulations of the SEC thereunder.

               (ii) Notwithstanding the foregoing provisions of this Section
                    4.2(f), no representation or warranty is made by Scient
                    with respect to statements made or incorporated by
                    reference in the Form S-4 or the Joint Proxy
                    Statement/Prospectus based on information supplied in
                    writing by iXL for inclusion or incorporation by reference
                    therein.

          (g)  Board Approval. The Board of Directors of Scient, by resolutions
               duly adopted and not subsequently rescinded or modified in any
               way (the "Scient Board Approval"), has duly (i) determined that
               this Agreement and the Scient Merger are fair to and in the best
               interests of Scient and its stockholders and declared the Scient
               Merger to be advisable, (ii) approved this Agreement, the Voting
               Agreements, and the Scient Merger, and (iii) recommended that
               the stockholders of Scient adopt this Agreement and directed
               that such matter be submitted for consideration by Scient's
               stockholders at the Scient Stockholders Meeting.

          (h)  Anti-Takeover Statutes Not Applicable. Scient has taken (or
               caused to have been taken) and has done (or caused to have been


                                      35



               done) all actions and things necessary to make this Agreement
               and the Mergers contemplated herein exempt from and not
               otherwise subject to any State Takeover Laws applicable to
               Scient and the Scient Merger.

          (i)  Vote Required. The affirmative vote of the holders of a majority
               of the outstanding shares of Scient Common Stock to adopt this
               Agreement (the "Required Scient Vote") is the only vote of the
               holders of any class or series of Scient capital stock necessary
               to adopt this Agreement and to consummate the Scient Merger and
               the other transactions contemplated hereby.

          (j)  Litigation; Compliance with Laws.

               (i)  There are no Actions pending or, to the knowledge of
                    Scient, threatened, against or affecting Scient or any
                    Subsidiary of Scient or any property or asset of Scient or
                    any Subsidiary of Scient which, individually or in the
                    aggregate, would reasonably be expected to have a Material
                    Adverse Effect on Scient, nor are there any judgments,
                    decrees, injunctions, rules or orders of any Governmental
                    Entity or arbitrator outstanding against Scient or any
                    Subsidiary of Scient which, individually or in the
                    aggregate, would reasonably be expected to have a Material
                    Adverse Effect on Scient.

               (ii) Except as, individually or in the aggregate, would not
                    reasonably be expected to have a Material Adverse Effect on
                    Scient, Scient and its Subsidiaries have been issued and
                    hold all permits, licenses, franchises, variances,
                    exemptions, waivers, orders and approvals of all
                    Governmental Entities which are necessary for the operation
                    of the businesses as now being conducted of Scient and its
                    Subsidiaries, taken as a whole (the "Scient Permits"), and
                    no suspension or cancellation of any of the Scient Permits
                    is pending or, to the knowledge of Scient, threatened.
                    Scient and its Subsidiaries are in compliance with the
                    terms of the Scient Permits, except where the failure to so
                    comply, individually or in the aggregate, would not
                    reasonably be expected to have a Material Adverse Effect on
                    Scient. Neither Scient nor its Subsidiaries is in violation
                    of, and Scient and its Subsidiaries have not received any
                    notices of violations with respect to, any laws, statutes,
                    ordinances, rules or regulations of any Governmental
                    Entity, except for violations which, individually or in the
                    aggregate, would


                                      36



                    not reasonably be expected to have a Material Adverse
                    Effect on Scient.

               (k)  Absence of Certain Changes or Events. Except as disclosed
                    in Section 4.2(k) of the Scient Disclosure Schedule and for
                    liabilities expressly permitted to be incurred in
                    accordance with this Agreement or directly incidental to
                    the transactions contemplated by the Mergers, since March
                    31, 2001, Scient and its Subsidiaries have conducted their
                    business only in the ordinary course and in a manner
                    consistent with past practice and, since such date, there
                    has not been:

                    (i)  any change, circumstance, state of facts or event
                         which, individually or in the aggregate, has had, or
                         reasonably could be expected to have, a Material
                         Adverse Effect on Scient;

                    (ii) any declaration, setting aside or payment of any
                         dividend or other distribution with respect to any
                         shares of capital stock of Scient, or any repurchase,
                         redemption or other acquisition by Scient or any of
                         its Subsidiaries of any outstanding shares of capital
                         stock or other securities of, or other ownership
                         interests in, Scient or any of its Subsidiaries;

                   (iii) any amendment of any material term of any outstanding
                         security of Scient or any of its Subsidiaries;

                    (iv) any incurrence, assumption or guarantee by Scient or
                         any of its Subsidiaries of any indebtedness for
                         borrowed money;

                     (v) any creation or other incurrence by Scient or any of
                         its Subsidiaries of any Lien on any material asset
                         other than in the ordinary course of business
                         consistent with past practices;

                    (vi) any making of any loan, advance or capital
                         contribution to or investment in any Person other than
                         loans, advances or capital contributions to or
                         investments in its wholly-owned Subsidiaries in the
                         ordinary course of business consistent with past
                         practices;

                   (vii) any transaction or commitment made, or any contract
                         or agreement entered into, by Scient or any of its
                         Subsidiaries relating to its assets or business
                         (including the acquisition or disposition of any
                         assets) or any relinquishment by Scient or any of its
                         Subsidiaries of any contract or other


                                      37



                         right, in either case, material to Scient and its
                         Subsidiaries, taken as a whole, other than
                         transactions and commitments in the ordinary course of
                         business consistent with past practices and those
                         expressly contemplated by this Agreement;

                  (viii) any change in any method of accounting, method of
                         tax accounting or accounting principles or practice by
                         Scient or any of its Subsidiaries, except for any such
                         change required by reason of a concurrent change in
                         GAAP or Regulation S-X under the 1934 Act;

                    (ix) any (A) grant of any severance or termination pay to
                         (or amendment to any existing arrangement with) any
                         director, officer or employee of Scient or any of its
                         Subsidiaries, (B) increase in compensation, bonus or
                         other benefits payable to any director, officer or
                         employee of Scient or any of its Subsidiaries, other
                         than in the ordinary course of business consistent
                         with past practices, increase in benefits payable
                         under any existing severance or termination pay
                         policies or employment agreements, (C) entering into
                         any employment, deferred compensation or other similar
                         agreement (or any amendment to any such existing
                         agreement) with any director, officer or employee of
                         Scient or any of its Subsidiaries, or (D)
                         establishment, adoption or amendment (except as
                         required by applicable law) of any collective
                         bargaining, bonus, profit-sharing, thrift, pension,
                         retirement, deferred compensation, compensation, stock
                         option, restricted stock or other benefit plan or
                         arrangement covering any director, officer or employee
                         of Scient or any of its Subsidiaries; or

                    (x)  any material Tax election made or changed, any annual
                         tax accounting period changed, any method of tax
                         accounting adopted or changed, any material amended
                         Tax Returns or claims for material Tax refunds filed,
                         any material closing agreement entered into, any
                         material Tax claim, Audit or assessment settled, or
                         any right to claim a material Tax refund, offset or
                         other reduction in Tax liability surrendered.

          (l)  Intellectual Property. Except as would not, individually or in
               the aggregate, reasonably be expected to have a Material Adverse
               Effect on Scient: (i) Scient and/or each of its Subsidiaries
               owns, or is licensed to use (in each case, free and clear of any
               Liens), all Intellectual Property used in or necessary for the
               conduct of its business as currently conducted; (ii) to the
               knowledge of Scient,


                                      38



               the use of any Intellectual Property by Scient and/or its
               Subsidiaries does not infringe on or otherwise violate the
               rights of any Person, (iii) the use of the Intellectual Property
               is in accordance with subsisting and enforceable licenses
               pursuant to which Scient or any Subsidiary acquired the right to
               use any Intellectual Property; and (iv) to the knowledge of
               Scient, no Person is challenging, infringing or otherwise
               violating any right of Scient or any of its Subsidiaries with
               respect to any Intellectual Property owned by and/or licensed to
               Scient or its Subsidiaries. At the date of this Agreement,
               except as would not reasonably be expected, individually or in
               the aggregate, to have a Material Adverse Effect on Scient,
               neither Scient nor any of its Subsidiaries has knowledge of any
               pending claim, order or proceeding with respect to any
               Intellectual Property used by Scient and its Subsidiaries and to
               its knowledge no Intellectual Property owned and/or licensed by
               Scient or its Subsidiaries is being used or enforced in a manner
               that would reasonably be expected to result in the abandonment,
               cancellation or unenforceability of such Intellectual Property.

               None of the Intellectual Property or other know-how relating to
               the business of Scient and/or its Subsidiaries, the value of
               which to Scient is contingent upon maintenance of the
               confidentiality thereof has been disclosed by Scient or any of
               its Affiliates to any Person other than those Persons who are
               bound to hold such information in confidence pursuant to
               confidentiality agreements or by operation of law, except
               insofar as such disclosures would not, individually or in the
               aggregate, reasonably be expected to have a Material Adverse
               Effect on Scient. Neither Scient nor any of its Subsidiaries are
               party to any contract that restricts or otherwise limits the
               ability of Scient or such Subsidiary to perform services for any
               other Person. To the knowledge of Scient, each employee of
               Scient and its Subsidiaries is a party to an agreement
               substantially similar to the "Scient Employee Nonsolicitation
               and Confidentiality Agreement" made available to iXL prior to
               the date hereof.

          (m)  Brokers or Finders. Other than Thomas Weisel Partners LLC and
               Morgan Stanley & Co., Incorporation, no agent, broker,
               investment banker, financial advisor or other firm or Person is
               or will be entitled to any broker's or finder's fee or any other
               similar commission or fee in connection with any of the
               transactions contemplated by this Agreement based upon
               arrangements made by or on behalf of Scient.

          (n)  Opinion of Scient Financial Advisor. Scient's Board of Directors
               has received the opinion of Thomas Weisel Partners LLC dated the


                                      39



               date of this Agreement, to the effect that, at such date, the
               Scient Exchange Ratio is fair, from a financial point of view,
               to the holders of Scient Common Stock. A copy of such opinion
               will be made available to iXL promptly after the date of this
               Agreement, and such opinion has not been modified or withdrawn.

          (o)  Taxes. Each of Scient and its Subsidiaries has filed all Tax
               Returns required to have been filed (or extensions have been
               duly obtained) and has paid all Taxes required to have been paid
               by it (or has established in accordance with GAAP an adequate
               accrual for all material Taxes through the end of the last
               period for when Scient and its Subsidiaries ordinarily record
               items on their respective books), except where failure to file
               such Tax Returns or pay such Taxes would not, individually or in
               the aggregate, reasonably be expected to have a Material Adverse
               Effect on Scient. All such Tax Returns are, or will be at the
               time of filing, true and complete in all material respects. No
               Audit is pending or threatened with respect to any Tax Returns
               filed by, or Taxes due from, Scient or any of its Subsidiaries.
               There is no current deficiency or adjustment for any Taxes
               proposed, asserted, or assessed against the Company or any of
               its Subsidiaries. There are no material Liens for Taxes upon the
               assets of the Company or any of its Subsidiaries, except for
               statutory Liens for current Taxes not yet due and those being
               contested in good faith. Neither Scient nor any of its
               Subsidiaries owns an interest in real property in any
               jurisdiction in which a Tax is imposed, or the value of the
               interest is reassessed, on the transfer of an interest in real
               property and which treats the transfer of an interest in an
               entity that owns an interest in real property as a transfer of
               the interest in real property. Neither Scient nor any of its
               Subsidiaries has taken any action or knows of any fact that is
               reasonably likely to prevent the Mergers from qualifying as
               reorganizations within the meaning of Section 368(a) of the
               Code.

          (p)  Material Contracts.

               (i)  Except for the contracts, leases, licenses, commitments,
                    and other instruments (collectively, the "Scient
                    Contracts") specifically disclosed in the Scient SEC
                    Reports filed with the SEC prior to the date of this
                    Agreement, or as disclosed at Section 4.2(p) on the Scient
                    Disclosure Schedule, as of the date hereof, neither Scient
                    nor any of its Subsidiaries is a party to or bound by: (I)
                    any partnership, joint venture or other similar agreement
                    or arrangement (other than any such agreement or
                    arrangement disclosed in Section 4.2(d) of the Scient
                    Disclosure Schedule) that, if the transactions contemplated


                                      40



                    thereby were consummated, would result in iXL or any of its
                    Subsidiaries being a partner, member or equity owner or
                    participant of or in any partnership, joint venture, or
                    similar entity or result in a Scient Minority Interest;
                    (II) any agreement relating to indebtedness for borrowed
                    money or the deferred purchase price of property (in either
                    case whether incurred, assumed, guaranteed or secured by an
                    asset); or (III) any agreement containing any provision or
                    covenant limiting in any respect the ability of Scient or
                    any of its Subsidiaries or any Affiliate of Scient or
                    Holdco, iXL or any successor of Scient after the Effective
                    Time to compete in any manner (with respect to the
                    businesses conducted on the date hereof and intended to be
                    conducted after the Effective Time by the parties hereto)
                    with any Person in any geographic area.

               (ii) Each Scient Contract specifically disclosed in any Scient
                    SEC Report or required to be disclosed pursuant to this
                    Section 4.2(p) is valid and in full force and effect,
                    except to the extent they have previously expired in
                    accordance with their terms or the failure to so be in full
                    force and effect, individually or in the aggregate, would
                    not reasonably be expected to have a Material Adverse
                    Effect on Scient. Neither Scient nor any of its
                    Subsidiaries has violated any provision of, or committed or
                    failed to perform any act which with or without notice,
                    lapse of time or both would constitute a default under the
                    provisions of, any such contract, except in each case for
                    those violations and defaults which, individually or in the
                    aggregate, would not reasonably be expected to result in a
                    Material Adverse Effect on Scient.

          (q)  Employee Benefits.

               (i)  Prior to the date hereof, Scient has made available to iXL
                    each "employee benefit plan", as defined in Section 3(3) of
                    ERISA, and each plan or other arrangement (written or oral)
                    (including employment and severance agreements) providing
                    for compensation, bonuses, profit-sharing, stock option or
                    other equity-related rights or other forms of incentive or
                    deferred compensation, employee loans, vacation benefits,
                    insurance coverage (including any self-insured
                    arrangements), health, medical, dental or vision benefits,
                    disability benefits, workers' compensation, supplemental
                    unemployment benefits, severance benefits and
                    post-employment or retirement benefits (including
                    compensation, pension, health, medical or life insurance
                    benefits), in each case which is maintained, administered,


                                      41



                    or contributed to by Scient or any ERISA Affiliate thereof
                    and covers any employee, director or independent contractor
                    or former employee, director or independent contractor of
                    Scient or any ERISA Affiliate thereof or under which Scient
                    or any ERISA Affiliate thereof has any liability with
                    respect to current or former employees, directors or
                    independent contractors of Scient or any ERISA Affiliate
                    thereof. Copies of such plans or other arrangements (and,
                    if applicable, related trust agreements) and all amendments
                    thereto and written interpretations thereof have been made
                    available to iXL prior to the date hereof together with the
                    most recent annual report (Form 5500 Annual Report
                    including, if applicable, Schedule B thereto) prepared in
                    connection with any such plan or other arrangement. Such
                    plans or other arrangements are referred to collectively as
                    the "Scient Benefit Plans"; provided that a plan or other
                    arrangement with respect to a former employee, director or
                    independent contractor shall constitute a "Scient Benefit
                    Plan" only to the extent that Scient or its ERISA Affiliate
                    has any present or future liability or obligation. At no
                    time has Scient or any person who from time to time is or
                    was an ERISA Affiliate of Scient ever maintained an
                    employee benefit plan that is subject to Title IV of ERISA.
                    Section 4.2(q) of the Scient Disclosure Schedule lists each
                    material Scient Benefit Plan.

               (ii) Except as would not, individually or in the aggregate,
                    reasonably be expected to have a Material Adverse Effect on
                    Scient, each of the Scient Benefit Plans, and the
                    administration thereof, is, and has been, in compliance
                    with the requirements provided by any and all applicable
                    statutes, orders or governmental rules or regulations
                    currently in effect, including, but not limited to, ERISA
                    and the Code. Each Scient Benefit Plan and its related
                    trust which is intended to qualify under Section 401(a) and
                    Section 501(a) of the Code is so qualified, and nothing has
                    occurred to cause the loss of such qualification. Scient
                    has made available to iXL copies of the most recent
                    Internal Revenue Service determination letters with respect
                    to each such Scient Benefit Plan, if any. Each Scient
                    Benefit Plan which is intended to be exempt under Section
                    501(c)(9) or 501(c)(17) of the Code satisfies the
                    requirements for such exemption, so qualifies in form and
                    in operation, and meets, or has satisfied, the requirements
                    of Section 505(c) of the Code and the regulations
                    thereunder.


                                       42



              (iii) Except as set forth in Section 4.2 of the Scient
                    Disclosure Schedule, with respect to each Scient Benefit
                    Plan, there are no funded benefit obligations for which
                    contributions have not been made or properly accrued and
                    there are no unfunded benefit obligations which have not
                    been accounted for by reserves, or otherwise properly
                    footnoted in accordance with GAAP, on the Scient SEC
                    Reports, which obligations are reasonably likely,
                    individually or in the aggregate, to have a Material
                    Adverse Effect on Scient.

               (iv) Except as would not, individually or in the aggregate,
                    reasonably be expected to have a Material Adverse Effect on
                    Scient, with respect to each Scient Benefit Plan (A) no
                    prohibited transactions as defined in Section 406 of ERISA
                    or Section 4975 of the Code have occurred or are expected
                    to occur as a result of the transactions contemplated by
                    this Agreement, and (B) no action, suit, grievance,
                    arbitration or other manner of litigation, or claim with
                    respect to the assets thereof of any Scient Benefit Plan
                    (other than routine claims for benefits made in the
                    ordinary course of plan administration for which plan
                    administrative review procedures have not been exhausted)
                    is pending, threatened or imminent against or with respect
                    to any of the Scient Benefit Plans, Scient, any ERISA
                    Affiliate or any Fiduciary, including but not limited to
                    any action, suit, grievance, arbitration or other manner of
                    litigation, or claim regarding conduct that allegedly
                    interferes with the attainment of rights under any Scient
                    Benefit Plans. Except as would not, individually or in the
                    aggregate, reasonably be expected to have a Material
                    Adverse Effect on Scient, none of Scient or its directors,
                    officers, or employees, or any Fiduciary has any liability
                    for failure to comply with ERISA or the Code for any action
                    or failure to act in connection with the administration or
                    investment of such plans.

               (v)  No Scient Benefit Plan is a multiemployer plan within the
                    meaning of Section 3(37) of ERISA.

               (vi) Scient and its Subsidiaries are in compliance with all
                    federal, state, local and foreign requirements regarding
                    employment, except for any failures to comply that are not
                    reasonably likely, individually or in the aggregate, to
                    have a Material Adverse Effect on Scient. As of the date of
                    this Agreement, there is no labor dispute, strike or work
                    stoppage against Scient or any of its Subsidiaries pending
                    or, to the knowledge of Scient, threatened which may


                                      43



                    interfere with the business activities of Scient or any of
                    its Subsidiaries, except where such dispute, strike or work
                    stoppage is not reasonably likely, individually or in the
                    aggregate, to have a Material Adverse Effect on Scient.

              (vii) Except as set forth in Section 4.2(q) of the Scient
                    Disclosure Schedule, no employee of Scient or any of its
                    Subsidiaries will become entitled to any change-in-control,
                    retirement, severance, retention or similar benefit or
                    enhanced or accelerated benefit or any forgiveness of an
                    outstanding advance or loan as a result of the transactions
                    contemplated hereby (either solely as a result thereof or
                    as a result of such transactions in conjunction with any
                    other event). Without limiting the generality of the
                    foregoing, no amount required to be paid or payable to or
                    with respect to any employee of Scient or any of its
                    Subsidiaries in connection with the transactions
                    contemplated hereby (either solely as a result thereof or
                    as a result of such transactions in conjunction with any
                    other event) will, to the knowledge of Scient or any of its
                    Subsidiaries, be an "excess parachute payment" within the
                    meaning of Section 280G of the Code.

             (viii) There has been no amendment to, written interpretation or
                    announcement (whether or not written) by Scient or any of
                    its ERISA Affiliates relating to, or change in
                    participation or coverage under, any Scient Benefit Plan
                    which would increase materially the expense of maintaining
                    such Scient Benefit Plan above the level of the expense
                    incurred in respect thereof for the twelve months ended on
                    June 30, 2001.

          (r)  Rights Agreement. The Rights Agreement has not been amended or
               modified since July 18, 2000, and shall not be amended or
               modified except as set forth in Section 6.15 or as may be
               mutually agreed to by iXL and Scient to effectuate the
               provisions of Section 6.15.

          (s)  Insurance. All material fire, property and casualty, general
               liability, errors and omissions, business interruption, product
               liability, and sprinkler and water damage insurance policies
               maintained by Scient or any of its Subsidiaries are with
               reputable insurance carriers, provide full and adequate coverage
               for all normal risks incident to the businesses of Scient and
               its Subsidiaries and their respective properties and assets, and
               are in character and amount at least equivalent to that carried
               by persons engaged in similar businesses and subject to the same
               or similar


                                      44



               perils or hazards, except for any such failures to maintain
               insurance policies that, individually or in the aggregate, would
               not have a Material Adverse Effect on Scient. Scient and each of
               its Subsidiaries have made any and all payments required to
               maintain such policies in full force and effect. Except as set
               forth in Section 4.2(s) of the Scient Disclosure Schedule,
               neither Scient nor any of its Subsidiaries has received notice
               of default under any such policy, and has not received written
               notice, or, to the knowledge of iXL, oral notice of any pending
               or threatened termination or cancellation, denial of coverage or
               limitation or reduction of coverage or material premium increase
               with respect to such policy.

          (t)  Transactions with Related Persons.

               (i)  Section 4.2(t) of the Scient Disclosure Schedule sets forth
                    a list of all agreements in effect with Related Persons and
                    not required to be disclosed in to the Scient SEC Reports
                    pursuant to Item 404 of Regulation S-K. Except as set forth
                    in Section 4.2(t) of the Scient Disclosure Schedule or the
                    Scient SEC Reports, since March 31, 2001, neither Scient
                    nor any of its Subsidiaries has (I) purchased, leased or
                    otherwise acquired any material property or assets or
                    obtained any material services from, (II) sold, leased or
                    otherwise disposed of any material property or assets or
                    provided any material services to (except with respect to
                    remuneration for services rendered in the ordinary course
                    of business as director, officer or employee of Scient or
                    any of its Subsidiaries), (III) entered into or modified in
                    any manner any contract or other agreement with, or (IV)
                    borrowed any money from, or made or forgiven any loan or
                    other advance (other than expenses or similar advances made
                    in the ordinary course of business) to, any officer,
                    director or Affiliate (collectively, "Scient Related
                    Persons"). Prior to the date hereof, Scient has made
                    available to iXL true and complete copies of each contract,
                    arrangement and understanding between Scient or any of its
                    Subsidiaries, on the one hand, and any Scient Related
                    Person, on the other.

               (ii) Except as set forth in Section 4.2(t) of the Scient
                    Disclosure Schedule, (x) the contracts of Scient and its
                    Subsidiaries do not include any material obligation or
                    commitment between Scient or any Scient Related Person, (y)
                    the assets of Scient or any of its Subsidiaries do not
                    include any receivable or other obligation or commitment
                    from a Scient Related Person to Scient or any of its
                    Subsidiaries, and (z) the liabilities of Scient and its


                                      45



                    Subsidiaries do not include any payable or other obligation
                    or commitment from iXL or any of its Subsidiaries to any
                    Scient Related Person.

              (iii) Except as set forth in Section 4.2(t) of the Scient
                    Disclosure Schedule, no Scient Related Person is a party to
                    any contract with any customer or supplier of Scient or any
                    of its Subsidiaries that affects in any material manner the
                    business, financial condition or results of operation of
                    Scient or any of its Subsidiaries.

          (u)  Leased Properties. Scient does not own a fee interest in any
               real property. Section 4.1(u) of the Scient Disclosure Schedule
               correctly describes all real property which Scient leases as a
               tenant, subleases (whether as sublandlord or subtenant), or
               otherwise occupies ("Scient Leased Properties"). Scient has a
               valid leasehold interest in all Scient Leased Properties.

              ARTICLE 5. COVENANTS RELATING TO CONDUCT OF BUSINES

     5.1. Covenants of iXL. During the period from the date of this Agreement
and continuing until the Effective Time, iXL agrees as to itself and its
Subsidiaries that iXL and its Subsidiaries shall carry on their respective
businesses in the usual, regular and ordinary course in all material respects,
in substantially the same manner as heretofore conducted (provided that any
significant restructuring shall not be considered ordinary course), and shall
use their reasonable best efforts to preserve intact their present lines of
business, maintain their rights and franchises and preserve their relationships
with customers, suppliers and others having business dealings with them to the
end that their ongoing businesses shall not be impaired in any material respect
at the Effective Time. Without limiting the generality of the foregoing, from
the date hereof until the Closing Date (except as expressly contemplated or
permitted by this Agreement, including Section 6.2(b) hereof with respect to
Sections 5.1(f), 5.1(i) and 5.1(l), Section 5.1 of the iXL Disclosure Schedule,
or as required by a Governmental Entity or to the extent that Scient shall
otherwise consent in writing, which consent shall not unreasonably be withheld
or delayed):

          (a)  New Business; Capital Expenditures. Other than in connection
               with acquisitions expressly permitted by Section 5.1(e) or
               investments expressly permitted by Section 5.1(g), iXL shall
               not, and shall not permit any of its Subsidiaries to, (A) enter
               into any new line of business material (in terms of revenue,
               cash flows or assets) to iXL and its Subsidiaries (taken as a
               whole), or (B) incur or commit to any capital expenditures or
               any obligations or liabilities in connection therewith other
               than capital expenditures and obligations or liabilities in
               connection therewith as disclosed in Section 5.1(a) of the iXL
               Disclosure Schedule or incurred or committed to in the ordinary
               course of business consistent with


                                      46



               past practice.

          (b)  Dividends; Changes in Share Capital. iXL shall not, and shall
               not permit any of its Subsidiaries to, and shall not propose to
               (i) declare or pay any dividends on or make other distributions
               in respect of any of its capital stock, except as permitted by
               clause (ii) of this Section 5.1(b), (ii) split, combine or
               reclassify any of its capital stock or issue or authorize or
               propose the issuance of any other securities in respect of, in
               lieu of or in substitution for, shares of its capital stock,
               except for (x) any such transaction by a wholly owned Subsidiary
               of iXL that remains a wholly owned Subsidiary after consummation
               of such transaction, or (y) a forward or reverse stock split of
               the iXL Common Stock, or (iii) except as set forth in Section
               5.1(b) of the iXL Disclosure Schedule, repurchase, redeem or
               otherwise acquire any shares of its capital stock or any
               securities convertible into or exercisable or exchangeable for
               any shares of its capital stock, except for the purchase from
               time to time by iXL of iXL Common Stock in connection with the
               iXL Benefit Plans in the ordinary course of business consistent
               with past practice.

          (c)  Issuance of Securities. iXL shall not, and shall not permit any
               of its Subsidiaries to, issue, deliver or sell, or authorize or
               propose the issuance, delivery or sale of, any shares of its
               capital stock of any class or series, any iXL Voting Debt, or
               any securities convertible into or exercisable or exchangeable
               for, or any rights, warrants, calls, puts or options to acquire,
               any such shares or iXL Voting Debt, or enter into any contract,
               plan, understanding, commitment, arrangement, undertaking or
               agreement with respect to any of the foregoing, other than (i)
               in accordance with Section 5.1(i), (ii) the issuance of iXL
               Common Stock upon the exercise of iXL Stock Options and/or iXL
               Warrants outstanding as of the date hereof in accordance with
               their present terms or pursuant to iXL Stock Options or iXL
               Warrants, (iii) issuances by a wholly owned Subsidiary of iXL of
               capital stock to such Subsidiary's parent or another wholly
               owned Subsidiary of iXL, or (iv) pursuant to acquisitions and
               investments as disclosed in Section 5.1(e) or 5.1(g) of the iXL
               Disclosure Schedule or the financings therefor or as disclosed
               in Section 5.1(c) of the iXL Disclosure Schedule.

          (d)  Governing Documents. Except to the extent required to comply
               with their respective obligations or as otherwise expressly
               contemplated by this Agreement, iXL and India Merger Sub shall
               not amend or restate or propose to so amend or restate their
               respective certificates of incorporation or bylaws.

          (e)  No Acquisitions. Other than (i) acquisitions disclosed in
               Section 5.1(e) of the iXL Disclosure Schedule, and (ii)
               acquisitions in


                                      47



               existing or related lines of business of iXL the fair market
               value of the total consideration (including the value of any
               indebtedness acquired or assumed in connection therewith) for
               which does not exceed the amount specified in the aggregate for
               such acquisitions in Section 5.1(e)(ii) of the iXL Disclosure
               Schedule and none of which acquisitions referred to in this
               clause (ii) presents a material risk of making it materially
               more difficult to obtain any Required Approval, iXL shall not,
               and shall not permit any of its Subsidiaries to, acquire or
               agree to acquire by merger, share exchange, business
               combination, or consolidation, or by purchasing a material
               equity interest in or a material portion of the assets of, or by
               any other manner, any business or any corporation, partnership,
               limited liability entity, association or other business
               organization or division thereof or otherwise acquire or agree
               to acquire any assets (excluding the acquisition of assets used
               in the operations of the business of iXL and its Subsidiaries in
               the ordinary course, which assets do not constitute a business
               unit, division or all or substantially all of the assets of the
               transferor or which assets would not constitute a Significant
               Subsidiary of iXL); provided, however, that the foregoing shall
               not prohibit (x) internal reorganizations or consolidations
               involving existing wholly owned Subsidiaries of iXL, or (y) the
               creation of new Subsidiaries of iXL organized solely to conduct
               or continue activities otherwise expressly permitted by this
               Agreement.

          (f)  No Dispositions. Other than (i) internal reorganizations or
               consolidations involving existing wholly owned Subsidiaries of
               iXL, (ii) dispositions referred to in the iXL SEC Reports filed
               prior to the date of this Agreement, (iii) dispositions,
               assignments, or subleases of the iXL Leased Properties (or
               portions thereof) which, as of the date of such disposition,
               assignment, or sublease, are vacant and have monthly rental
               obligations greater than the fair market rental rate for similar
               properties in the area, or (iv) as may be required by or in
               conformance with law or regulation in order to permit or
               facilitate the consummation of the transactions contemplated
               hereby or (iv) as disclosed in Section 5.1(f) of the iXL
               Disclosure Schedule, iXL shall not, and shall not permit any of
               its Subsidiaries to, sell, lease or otherwise dispose of, or
               agree to sell, lease or otherwise dispose of, any of its assets
               (including capital stock of Subsidiaries of iXL but excluding
               inventory in the ordinary course of business), if the fair
               market value of the total consideration (including the value of
               the indebtedness acquired or assumed in connection therewith)
               therefore exceeds the amount specified in the aggregate for all
               such dispositions in Section 5.1(f) of the iXL Disclosure
               Schedule.


                                      48



          (g)  Investments; Indebtedness. iXL shall not, and shall not permit
               any of its Subsidiaries to, (i) other than in connection with
               acquisitions permitted by Section 5.1(e) or as disclosed in
               Section 5.1(g) of the iXL Disclosure Schedule, make any loans,
               advances or capital contributions to, or investments in, any
               other Person, other than (x) loans or investments by iXL or a
               Subsidiary of iXL to or in iXL or any Subsidiary of iXL, (y)
               employee loans or advances made in the ordinary course of
               business or (z) in the ordinary course of business consistent
               with past practice which are not, individually or in the
               aggregate, material to iXL and its Subsidiaries taken as a whole
               (provided that none of such transactions referred to in this
               clause (z) presents a material risk of making it more difficult
               to obtain any approval or authorization required in connection
               with the Mergers under Regulatory Law, or (ii) except as set
               forth in Section 5.1(g) of the iXL Disclosure Schedule or to the
               extent expressly permitted by Section 5.1(c) and 5.1(e), incur
               any indebtedness for borrowed money or guarantee or assume or
               suffer to exist any such indebtedness of another Person, issue
               or sell any debt securities or warrants or other rights to
               acquire any debt securities of iXL or any of its Subsidiaries,
               guarantee any debt securities of another Person, enter into any
               "keep well" or other agreement to maintain any financial
               statement condition of another Person (other than any wholly
               owned Subsidiary of iXL) or enter into any arrangement having
               the economic effect of any of the foregoing.

          (h)  Tax-Free Qualification. iXL shall use its reasonable best
               efforts not to, and shall use its reasonable best efforts not to
               permit any of its Subsidiaries to, take any action (including
               for this purpose any action otherwise permitted by this Section
               5.1) that would prevent or impede the Mergers from qualifying as
               reorganizations under Section 368 of the Code.

          (i)  Compensation.

               (i)  Except (x) as set forth in Section 5.1(i) of the iXL
                    Disclosure Schedule, (y) as required by law, or (z) in the
                    ordinary course of business consistent with past practice,
                    iXL shall not increase the amount of compensation or other
                    remuneration of any director, executive officer or key
                    employee of iXL or any Subsidiary or business unit of iXL,
                    or make any increase in or commitment to increase any
                    compensation or employee benefits, adopt or amend or make
                    any commitment to adopt or amend any iXL Benefit Plan or
                    make any contribution, other than regularly scheduled
                    contributions, to any iXL Benefit Plan. Any agreement or
                    commitment (written or oral) made after the


                                      49



                    date hereof to grant or modify any compensation or benefits
                    (including, without limitation, any signing bonus or equity
                    compensation) to any individual who, after giving effect to
                    such grant or modification, will be entitled to an annual
                    base salary of $150,000 or more from iXL or any of its
                    Subsidiaries, shall be subject to the consent of Scient,
                    such consent not to be unreasonably withheld or delayed.
                    Any grant of severance in the amount of 12 weeks or more of
                    base salary to any individual who is employed by iXL or any
                    of its Subsidiaries shall be subject to the consent of
                    Scient. Notwithstanding anything to the contrary, on and
                    after the date hereof, iXL shall not grant any stock-based
                    compensation to any individual (including, without
                    limitation, any stock options, restricted stock, stock
                    appreciation rights or any other stock-related awards)
                    except for such awards made on an individual basis to
                    individuals in connection with their initial commencement
                    of employment or promotion to a new employment level, in
                    which case such individuals may be granted such awards in
                    the ordinary course consistent with past practice; provided
                    that any such awards shall not be subject to accelerated
                    vesting or exercisability (or other enhancements) as a
                    result of the transactions contemplated by this Agreement
                    (alone or in conjunction with any other events) and shall
                    be subject to Section 2.10. The terms of any such awards
                    shall be subject to the prior consent of Scient, such
                    consent not to be unreasonably withheld or delayed.

               (ii) Notwithstanding anything in this Agreement to the contrary,
                    iXL shall be permitted to enter into reasonable severance
                    arrangements to the executives of iXL or any of its
                    Subsidiaries that are substantially comparable to severance
                    arrangements made available to similarly situated
                    executives of Scient and its Subsidiaries. iXL shall give
                    reasonably advance notice to Scient prior to such entry.

          (j)  Accounting Methods; Income Tax Elections. Except as disclosed in
               iXL SEC Reports filed prior to the date of this Agreement, or
               as required by a Governmental Entity, iXL shall not change its
               methods of accounting in effect at December 31, 2000, except as
               required by changes in GAAP as concurred with by iXL's
               independent public accountants. iXL shall not (i) change its
               fiscal year or annual tax accounting period, (ii) make any tax
               election or (iii) take or omit to take any other action, if such
               action or


                                      50



               omission, individually or in the aggregate, would have a
               Material Adverse Effect on iXL.

          (k)  Accruals; Other Tax Matters. iXL and each of its Subsidiaries
               will establish or cause to be established in accordance with
               GAAP on or before the Effective Time an adequate accrual for all
               material Taxes due with respect to any period ending prior to or
               as of the Effective Time. All Taxes incurred in connection with
               the iXL Merger (including real property transfer tax and any
               similar Tax) shall be paid by iXL when due, and iXL will, at its
               own expense, file all necessary Tax Returns and other
               documentation with respect to all such Taxes and fees, and, if
               required by applicable law, iXL will, and will cause its
               Subsidiaries to, join in execution of any such Tax Returns and
               other documentation.

          (l)  Certain Agreements and Arrangements. Except as disclosed in
               Section 5.1(l) of the iXL Disclosure Schedule, iXL shall not,
               and shall not permit any of its Subsidiaries to, enter into any
               agreements or arrangements that limit or otherwise restrict iXL
               or any of its Subsidiaries or any of their respective affiliates
               or any successor thereto or insofar as reasonably can be
               foreseen could, after the Effective Time, limit or restrict iXL
               or any of its affiliates (including Holdco) or any successor
               thereto, from engaging or competing in any line of business or
               in any geographic area, except as approved by the transition and
               succession team in the manner contemplated by Section 6.2(b).

          (m)  Satisfaction of Closing Conditions. Except as required by law,
               iXL shall not, and shall not permit any of its Subsidiaries to,
               take any action that would, or would reasonably be expected to,
               result in (i) any of the conditions to the Mergers set forth in
               Article 7 not being satisfied, or (ii) a material delay in the
               satisfaction of such conditions.

          (n)  No Related Actions. iXL shall not, and shall not permit any of
               its Subsidiaries to directly or indirectly (in any unitary
               transaction or a series of related transactions), agree or
               commit to do any of the foregoing.

     5.2. Covenants of Scient. During the period from the date of this
Agreement and continuing until the Effective Time, Scient agrees as to itself
and its Subsidiaries that Scient and its Subsidiaries shall carry on their
respective businesses in the usual, regular and ordinary course in all material
respects, in substantially the same manner as heretofore conducted (provided
that any significant restructuring shall not be considered ordinary course),
and shall use their reasonable best efforts to preserve intact their present
lines of business, maintain their rights and franchises and preserve their
relationships with customers, suppliers and others having business dealings
with them to the end that


                                      51



their ongoing businesses shall not be impaired in any material respect at the
Effective Time. Without limiting the generality of the foregoing, from the date
hereof until the Closing Date (except as expressly contemplated or permitted by
this Agreement, including Section 6.2(b) hereof with respect to Sections
5.2(f), 5.2(i) and 5.1(m), Section 5.2 of the Scient Disclosure Schedule, or as
required by a Governmental Entity or to the extent that iXL shall otherwise
consent in writing, which consent shall not unreasonably be withheld or
delayed):

          (a)  New Business; Capital Expenditures. Other than in connection
               with acquisitions expressly permitted by Section 5.2(e) or
               investments expressly permitted by Section 5.2(g), Scient shall
               not, and shall not permit any of its Subsidiaries to (A) enter
               into any new line of business material (in terms of revenue,
               cash flows or assets) to iXL and its Subsidiaries taken as a
               whole, or (B) incur or commit to any capital expenditures or any
               obligations or liabilities in connection therewith other than
               capital expenditures and obligations or liabilities in
               connection therewith as disclosed in Section 5.2(a) of the
               Scient Disclosure Schedule or incurred or committed to in the
               ordinary course of business consistent with past practice.

          (b)  Dividends; Changes in Share Capital. Scient shall not, and shall
               not permit any of its Subsidiaries to, and shall not propose to,
               (i) declare or pay any dividends on or make other distributions
               in respect of any of its capital stock, except as permitted by
               clause (ii) of this Section 5.1(b), (ii) split, combine or
               reclassify any of its capital stock or issue or authorize or
               propose the issuance of any other securities in respect of, in
               lieu of or in substitution for, shares of its capital stock,
               except for (x) any such transaction by a wholly owned Subsidiary
               of Scient that remains a wholly owned Subsidiary after
               consummation of such transaction, or (y) a forward or reverse
               stock split of the Scient Common Stock, or (iii) except as set
               forth in Section 5.2(b) of the Scient Disclosure Schedule,
               repurchase, redeem or otherwise acquire any shares of its
               capital stock or any securities convertible into or exercisable
               or exchangeable for any shares of its capital stock except for
               the purchase from time to time by Scient of Scient Common Stock
               in connection with the Scient Benefit Plans in the ordinary
               course of business consistent with past practice.

          (c)  Issuance of Securities. Scient shall not, and shall not permit
               any of its Subsidiaries to, issue, deliver or sell, or authorize
               or propose the issuance, delivery or sale of, any shares of its
               capital stock of any class or series, any Scient Voting Debt or
               any securities convertible into or exercisable or exchangeable
               for, or any rights, warrants, calls, puts or options to acquire,
               any such shares or Scient Voting Debt, or enter into any
               contract, plan, understanding,


                                      52



               commitment, arrangement, undertaking or agreement with respect
               to any of the foregoing, other than (i) in accordance with
               Section 5.2(i), (ii) the issuance of Scient Common Stock upon
               the exercise of Scient Stock Options outstanding as of the date
               hereof in accordance with their present terms or pursuant to
               Scient Stock Options, (iii) issuances by a wholly owned
               Subsidiary of Scient of capital stock to such Subsidiary's
               parent or another wholly owned Subsidiary of Scient, or (iv)
               pursuant to acquisitions and investments as disclosed in Section
               5.2(e) or 5.2(g) of the Scient Disclosure Schedule or the
               financings therefor or as disclosed in Section 5.2(c) of the
               Scient Disclosure Schedule.

          (d)  Governing Documents. Except as set forth in Section 5.2(d) of
               the Scient Disclosure Schedule or to the extent required to
               comply with their respective obligations or as otherwise
               expressly contemplated by this Agreement, Scient and Sierra
               Merger Sub shall not amend, restate or propose to so amend or
               restate their respective certificates of incorporation or
               bylaws.

          (e)  No Acquisitions. Other than (i) acquisitions disclosed in
               Section 5.2(e) of the Scient Disclosure Schedule, and (ii)
               acquisitions in existing or related lines of business of Scient
               the fair market value of the total consideration (including the
               value of any indebtedness acquired or assumed in connection
               therewith) for which does not exceed the amount specified in the
               aggregate for such acquisitions in Section 5.2(e)(ii) of the
               Scient Disclosure Schedule and none of which acquisitions
               referred to in this clause (ii) presents a material risk of
               making it materially more difficult to obtain any Required
               Approval, Scient shall not, and shall not permit any of its
               Subsidiaries to, acquire or agree to acquire by merger, share
               exchange, business combination or consolidation, or by
               purchasing a material equity interest in or a material portion
               of the assets of, or by any other manner, any business or any
               corporation, partnership, limited liability entity, association
               or other business organization or division thereof or otherwise
               acquire or agree to acquire any assets (excluding the
               acquisition of assets used in the operations of the business of
               Scient and its Subsidiaries in the ordinary course, which assets
               do not constitute a business unit, division or all or
               substantially all of the assets of the transferor or which
               assets would not constitute a Significant Subsidiary of Scient);
               provided, however, that the foregoing shall not prohibit (x)
               internal reorganizations or consolidations involving existing
               wholly owned Subsidiaries of Scient, or (y) the creation of new
               Subsidiaries of Scient organized solely to conduct or continue
               activities otherwise expressly permitted by this Agreement.


                                      53



          (f)  No Dispositions. Other than (i) internal reorganizations or
               consolidations involving existing wholly owned Subsidiaries of
               Scient, (ii) dispositions referred to in the Scient SEC Reports
               filed prior to the date of this Agreement, (iii) dispositions,
               assignments, or subleases of the Scient Leased Properties (or
               portions thereof) which, as of the date of such disposition,
               assignment, or sublease, are vacant and have monthly rental
               obligations greater than the fair market rental rate for similar
               properties in the area, (iv) as may be required by or in
               conformance with law or regulation in order to permit or
               facilitate the consummation of the transactions contemplated
               hereby or (v) as disclosed in Section 5.2(f) of the Scient
               Disclosure Schedule, Scient shall not, and shall not permit any
               of its Subsidiaries to, sell, lease or otherwise dispose of, or
               agree to sell, lease or otherwise dispose of, any of its assets
               (including capital stock of Subsidiaries of Scient, but
               excluding inventory in the ordinary course of business), if the
               fair market value of the total consideration (including the
               value of the indebtedness acquired or assumed in connection
               therewith) therefore exceeds the amount specified in the
               aggregate for all such dispositions in Section 5.2(f) of the
               Scient Disclosure Schedule.

          (g)  Investments; Indebtedness. Scient shall not, and shall not
               permit any of its Subsidiaries to, (i) other than in connection
               with acquisitions permitted by Section 5.2(e) or as disclosed in
               Section 5.2(g) of the Scient Disclosure Schedule, make any
               loans, advances or capital contributions to, or investments in,
               any other Person, other than (x) loans or investments by Scient
               or a Subsidiary of Scient to or in Scient or any Subsidiary of
               Scient, (y) employee loans or advances made in the ordinary
               course of business, or (z) in the ordinary course of business
               consistent with past practice which are not, individually or in
               the aggregate, material to Scient and its Subsidiaries taken as
               a whole (provided that none of such transactions referred to in
               this clause (z) presents a material risk of making it more
               difficult to obtain any approval or authorization required in
               connection with the Mergers under Regulatory Law), or (ii)
               except as set forth in Section 5.2(g) of the Scient Disclosure
               Schedule or to the extent expressly permitted by Sections 5.2(c)
               and 5.2(e), incur any indebtedness for borrowed money or
               guarantee or assume or suffer to exist any such indebtedness of
               another Person, issue or sell any debt securities or warrants or
               other rights to acquire any debt securities of Scient or any of
               its Subsidiaries, guarantee any debt securities of another
               Person, enter into any "keep well" or other agreement to
               maintain any financial statement condition of another Person
               (other than any wholly owned Subsidiary of Scient) or enter into
               any arrangement having the economic effect of any of the
               foregoing.


                                      54



          (h)  Tax-Free Qualification. Scient shall use its reasonable best
               efforts not to, and shall use its reasonable best efforts not to
               permit any of its Subsidiaries to, take any action (including
               for this purpose any action otherwise permitted by this Section
               5.2) that would prevent or impede the Mergers from qualifying as
               reorganizations under Section 368 of the Code.

          (i)  Compensation.

               (i)  Except (x) as set forth in Section 5.2(i) of the Scient
                    Disclosure Schedule, (y) as required by law, or (z) in the
                    ordinary course of business consistent with past practice,
                    Scient shall not increase the amount of compensation or
                    other remuneration of any director, executive officer or
                    key employee of Scient or any Subsidiary or business unit
                    of Scient, or make any increase in or commitment to
                    increase any compensation or employee benefits, adopt or
                    amend or make any commitment to adopt or amend any Scient
                    Benefit Plan or make any contribution, other than regularly
                    scheduled contributions, to any Scient Benefit Plan. Any
                    agreement or commitment (written or oral) made after the
                    date hereof to grant or modify any compensation or benefits
                    (including, without limitation, any signing bonus or equity
                    compensation) to any individual who, after giving effect to
                    such grant or modification, will be entitled to an annual
                    base salary of $150,000 or more from Scient or any of its
                    Subsidiaries, shall be subject to the consent of iXL, such
                    consent not to be unreasonably withheld or delayed. Any
                    grant of severance in the amount of 12 weeks or more of
                    base salary to any individual who is employed by Scient or
                    any of its Subsidiaries shall be subject to the consent of
                    iXL. Notwithstanding anything to the contrary, on and after
                    the date hereof, Scient shall not grant any stock-based
                    compensation to any individual (including, without
                    limitation, any stock options, restricted stock, stock
                    appreciation rights or any other stock-related awards)
                    except for such awards made on an individual basis to
                    individuals in connection with their initial commencement
                    of employment or promotion to a new employment level, in
                    which case such individuals may be granted such awards in
                    the ordinary course consistent with past practice; provided
                    that any such awards shall not be subject to accelerated
                    vesting or exercisability (or other enhancements) as a
                    result of the transactions contemplated by this Agreement
                    (alone or in conjunction with any other events) and shall
                    be subject to Section 2.8. The terms of


                                      55



                    any such awards shall be subject to the prior consent of
                    iXL, such consent not to be unreasonably withheld or
                    delayed.

               (ii) Notwithstanding anything in this Agreement to the contrary,
                    Scient shall be permitted to enter into reasonable
                    severance arrangements to the executives of Scient or any
                    of its Subsidiaries that are substantially comparable to
                    severance arrangements made available to similarly situated
                    executives of iXL and its Subsidiaries. Scient shall give
                    reasonably advance notice to iXL prior to such entry.

          (j)  Rights Agreement Matters. Except as expressly required by this
               Agreement (including in connection with the Rights
               Agreement Amendments pursuant to Section 6.15), Scient shall
               not, without the prior written consent of iXL, amend or modify
               or make any determination under or take any action with respect
               to, the Rights Agreement, including, without limitation, any
               redemption of the Rights or any action with respect to the
               Rights Agreement to facilitate any Acquisition Proposal;
               provided, however, that Scient may amend or take appropriate
               action under the Rights Agreement to delay the occurrence of a
               "Distribution Date" (as defined in the Rights Agreement) in
               response to the public announcement of an Acquisition Proposal.

          (k)  Accounting Methods; Income Tax Elections. Except as disclosed in
               Scient SEC Reports filed prior to - the date of this Agreement,
               or as required by a Governmental Entity, Scient shall not change
               its methods of accounting in effect at March 31, 2001, except as
               required by changes in GAAP as concurred with by Scient's
               independent public accountants. Scient shall not (i) change its
               fiscal year or annual tax accounting period (other than to a
               calendar year), (ii) make any tax election or (iii) take or omit
               to take any other action, if such action or omission,
               individually or in the aggregate, would have a Material Adverse
               Effect on Scient.

          (l)  Accruals; Other Tax Matters. Scient and each of its Subsidiaries
               will establish or cause to be established in accordance with
               GAAP on or before the Effective Time an adequate accrual for all
               material Taxes due with respect to any period ending prior to or
               as of the Effective Time. All Taxes incurred in connection with
               the Scient Merger (including real property transfer tax and any
               similar Tax) shall be paid by Scient when due, and Scient will,
               at its own expense, file all necessary Tax Returns and other
               documentation with respect to all such Taxes and fees, and, if
               required by applicable law, Scient will, and will cause its
               Subsidiaries to, join


                                      56



               in execution of any such Tax Returns and other documentation.

          (m)  Certain Agreements and Arrangements. Scient shall not, and shall
               not permit any of its Subsidiaries to, enter into any
               agreements or arrangements that limit or otherwise restrict
               Scient or any of its Subsidiaries or any of their respective
               affiliates or any successor thereto, or insofar as reasonably
               can be foreseen could, after the Effective Time, limit or
               restrict iXL or any of its affiliates (including Holdco) or any
               successor thereto, from engaging or competing in any line of
               business or in any geographic area, except as approved by the
               transition and succession team in the manner contemplated by
               Section 6.2(b).

          (n)  Satisfaction of Closing Conditions. Except as required by law,
               Scient shall not, and shall not permit any of its Subsidiaries
               to, take any action that would, or would reasonably be expected
               to, result in (i) any of the conditions to the Mergers set forth
               in Article 7 not being satisfied, or (ii) a material delay in
               the satisfaction of such conditions.

          (o)  No Related Actions. Scient shall not, and shall not permit any
               of its Subsidiaries to directly or indirectly (in a
               unitary transaction or a series of related transactions), agree
               or commit to do any of the foregoing.

     5.3. Governmental Filings. Each party shall (a) confer on a regular
intermittent basis with the other, and (b) report to the other (to the extent
permitted by law or regulation or the Confidentiality Agreement) on operational
matters. Scient and iXL shall timely file all reports required to be filed by
each of them with the SEC (and all other Governmental Entities) between the
date of this Agreement and the Effective Time and shall, if requested by the
other party and to the extent permitted by law or regulation or the
Confidentiality Agreement, deliver to the other party true and complete copies
of all such reports, announcements and publications promptly after such
request.

     5.4. Control of Other Party's Business. Nothing contained in this
Agreement (but without limitation of any undertakings or restrictive covenants
made by any party to this Agreement as to itself and its Subsidiaries) shall
give Scient, directly or indirectly, the right to control or direct iXL's
business or operations and nothing contained in this Agreement shall give iXL,
directly or indirectly, the right to control or direct Scient's business or
operations prior to the Effective Time. Prior to the Effective Time, each of
Scient and iXL shall exercise, consistent with the terms and conditions of this
Agreement, exclusive control, ownership and supervision over its own business
and operations.

                       ARTICLE 6. ADDITIONAL AGREEMENTS

     6.1. Preparation of Proxy Statement; Stockholders Meetings.


                                      57



          (a)  Joint Proxy and S-4. As promptly as practicable following the
               date hereof, iXL and Scient shall diligently prepare and cause
               to be filed with the SEC mutually acceptable proxy materials
               that shall constitute the joint proxy statement/prospectus
               relating to the matters to be submitted to the iXL stockholders
               at the iXL Stockholders Meeting and the matters to be submitted
               to the Scient stockholders at the Scient Stockholders Meeting
               (such proxy statement/prospectus, and all amendments and
               supplements thereto, the "Joint Proxy Statement/Prospectus") and
               iXL and Scient shall cause Holdco promptly to prepare and file
               with the SEC a registration statement on Form S-4 with respect
               to the issuance of Holdco Common Stock in the Mergers (such Form
               S-4, and any amendments or supplements thereto, the "Form S-4").
               The Joint Proxy Statement/Prospectus will be included in and
               constitute an integral part of the Form S-4 as Holdco's
               prospectus. Each of iXL and Scient shall use its best efforts to
               have the Joint Proxy Statement/Prospectus cleared by the SEC's
               staff and the Form S-4 declared effective by the SEC as promptly
               as possible and to keep the Form S-4 effective as long as is
               necessary to consummate the Mergers and the transactions
               contemplated hereby. As promptly as practicable after receipt
               thereof, iXL and Scient shall provide the other party copies of
               all written comments and advise the other party of any oral
               comments with respect to the Joint Proxy Statement/Prospectus or
               Form S-4 received from the SEC's staff. The parties shall
               cooperate and provide the other with a reasonable opportunity to
               review and comment on all proposed amendments and supplements to
               the Joint Proxy Statement/Prospectus and the Form S-4 prior to
               filing the same with the SEC, and will provide each other with a
               true and complete copy of all such filings made with the SEC.
               iXL will use its best efforts to cause the Joint Proxy
               Statements/Prospectus to be mailed to iXL's stockholders, and
               Scient will use its best efforts to cause the Joint Proxy
               Statement/Prospectus to be mailed to Scient's stockholders, in
               each case as promptly as practicable after the Form S-4 is
               declared effective by the SEC under the Securities Act. Holdco
               shall also take any action (other than qualifying to do business
               in any jurisdiction in which it is not now so qualified or to
               file a general consent to service of process) required to be
               taken under any applicable state securities and "blue sky" laws
               in connection with the Mergers and each of Scient and iXL shall
               furnish all information concerning it and the holders of its
               capital stock as may reasonably be requested in connection with
               any such action. Each party will advise the other party,
               promptly after it receives notice thereof, of the time when the
               Form S-4 has been declared effective, the issuance of any stop
               order, the suspension of the qualification of the Holdco Common
               Stock issuable in


                                      58



               connection with the Mergers for offering or sale in any
               jurisdiction, or any request by the SEC's staff for any
               amendment of or supplement to the Joint Proxy
               Statement/Prospectus or the Form S-4 or the submission of any
               supplemental materials (for review by the SEC's staff) in
               connection therewith. If at any time prior to the Effective Time
               any information relating to iXL or Scient or any of their
               respective affiliates, officers or directors should be
               discovered by iXL or Scient which should be set forth in an
               amendment or supplement to the Form S-4 or the Joint Proxy
               Statement/Prospectus such that any of such documents would not
               include any misstatement of a material fact or omit to state any
               material fact necessary to make the statements therein, in light
               of the circumstances under which they were made, not misleading,
               the party who discovers such information shall promptly notify
               the other party and, to the extent required by law, rules or
               regulations, an appropriate amendment or supplement describing
               such information shall be promptly filed with the SEC and
               disseminated to the stockholders of iXL and Scient.

          (b)  Scient Stockholders Meeting. Scient shall duly take all lawful
               action to call, give notice of, convene and hold a meeting of
               its stockholders on a date determined in accordance with the
               mutual agreement of Scient and iXL (the "Scient Stockholders
               Meeting") for - the purpose of (i) obtaining the Required Scient
               Vote and (ii) duly adopting (including in accordance with Rule
               16b-3 under the Exchange Act) an employee stock option plan of
               Holdco having the terms and conditions approved by the
               compensation committee of Holdco's Board of Directors (upon the
               recommendation of the transition and succession team
               contemplated by Section 6.2(b)), and shall take all lawful
               action to solicit (including any necessary interim postponement
               or adjournment to resolicit, if necessary) the adoption of this
               Agreement by the Required Scient Vote. The Board of Directors of
               Scient shall recommend (and publish in the Joint Proxy
               Statement/Prospectus such recommendation) the adoption of this
               Agreement by the stockholders of Scient as set forth in Section
               4.2(f) (the "Scient Recommendation"), and shall not, withdraw
               or, subject to the immediately following sentence, modify or
               qualify, in any manner adverse to iXL the Scient Recommendation,
               unless the Board of Directors of Scient determines in good faith
               after consultation with independent outside counsel that the
               failure to take such action would violate its fiduciary duties
               under applicable law; provided, however, notwithstanding any
               Change in the Scient Recommendation, this Agreement shall be
               submitted to the stockholders of Scient at the Scient
               Stockholders Meeting for the purpose of adopting this Agreement
               and nothing contained in this Agreement shall be deemed to
               relieve Scient of such obligation. Without limiting the


                                      59



               generality of the foregoing, nothing in this Agreement shall
               prevent the Board of Directors of Scient from making any
               disclosure to its stockholders if, after consultation with
               independent outside counsel, such disclosure is required by
               applicable law.

          (c)  iXL Stockholders Meeting. iXL shall duly take all lawful action
               to call, give notice of, convene and hold a meeting of its
               stockholders on a date determined in accordance with the mutual
               agreement of iXL and Scient (the "iXL Stockholders Meeting") for
               the purpose of (i) obtaining the Required iXL Vote and (ii) duly
               adopting (including in accordance with Rule 16b-3 under the
               Exchange Act) an employee stock option plan of Holdco having the
               terms and conditions approved by the compensation committee of
               Holdco's Board of Directors (upon the recommendation of the
               transition and succession team contemplated by Section 6.2(b)),
               and shall take all lawful action to solicit (including any
               necessary interim postponement or adjournment to resolicit if
               necessary) the adoption of this Agreement by the Required iXL
               Vote. The Board of Directors of iXL shall recommend (and publish
               in the Joint Proxy Statement/Prospectus such recommendation) the
               adoption of this Agreement by the stockholders of iXL as set
               forth in Section 4.1(f) (the "iXL Recommendation"), and shall
               not, withdraw or, subject to the immediately following sentence,
               modify or qualify, in any manner adverse to Scient the iXL
               Recommendation, unless the Board of Directors of iXL determines
               in good faith after consultation with independent outside
               counsel that the failure to take such action would violate its
               fiduciary duties under applicable law; provided, however,
               notwithstanding any Change in the iXL Recommendation, this
               Agreement shall be submitted to the stockholders of iXL at the
               iXL Stockholders Meeting for the purpose of adopting this
               Agreement and nothing contained in this Agreement herein shall
               be deemed to relieve iXL of such obligation. Without limiting
               the generality of the foregoing, nothing in this Agreement shall
               prevent the Board of Directors of iXL from making any disclosure
               to its stockholders if, after consultation with independent
               outside counsel, such disclosure is required by applicable law.

     6.2. Holdco Board of Directors; Executive Officers.

          (a)  At or prior to the Effective Time, each party hereto will take
               all action necessary (including, without limitation, including
               provisions in the Holdco Charter and Holdco Bylaws and the
               adoption of appropriate resolutions of, and the entering into of
               appropriate agreements among, the Board of Directors of Holdco)
               to (i) cause the Board of Directors of Holdco to be a classified


                                      60



               board with three classes, (ii) cause the Board of Directors of
               Holdco (including the classes thereof) and the executive
               committee thereof at the Effective Time to be comprised in
               accordance with Schedule 6.2(a) hereto, and (iii) cause the
               individuals listed in Schedule 6.2(a) thereto to be appointed as
               officers of Holdco as of the Effective Time in accordance with
               Schedule 6.2(a) hereto.

          (b)  Promptly following the date hereof, and to the extent permitted
               by applicable law, each party shall reasonably cooperate in the
               formation of a transition and succession team (to be comprised
               of an equal number of representatives of each of iXL and Scient)
               for the purpose of establishing goals and programs, and
               implementing same, in furtherance of the long-term strategic
               prospects, goals and objectives of the combined Companies. To be
               effective, any action undertaken by such transition and
               succession team shall require the affirmative approval of at
               least one representative of each of iXL and Scient.

     6.3. Termination of Registration of Scient Common Stock and iXL Common
Stock. As promptly as practicable after the Effective Time, iXL and Scient
shall file with the SEC Notices of Termination of Registration on Form 15
(pursuant to Rule 12g-4 under the Exchange Act) with respect to the Scient
Common Stock and the iXL Common Stock.

     6.4. Access to Information. Upon reasonable notice, each party shall (and
shall cause its Subsidiaries to) afford to the officers, employees,
accountants, counsel, financial advisors and other representatives of the other
party reasonable access during normal business hours, during the period prior
to the Effective Time, to all its properties, books, contracts, commitments,
records, (including audit work papers), officers and employees and, during such
period, such party shall (and shall cause its Subsidiaries to) furnish promptly
to the other party (a) a true and complete copy of each report, schedule,
registration statement and other document filed, published, announced or
received by it during such period pursuant to the requirements of Federal or
state securities laws, the HSR Act or other laws, rules and regulations that
may be applicable (other than documents, or portions thereof, which such party
is not permitted to disclose under applicable law or which such party
reasonably believes to relate to negotiating strategies), and (b) all other
information concerning it and its business, properties and personnel as such
other party may reasonably request; provided, however, that any party may
restrict the foregoing access to the extent that (i) any law, treaty, rule or
regulation of any Governmental Entity applicable to such party or any contract
requires such party or its Subsidiaries to restrict or prohibit access to any
such properties or information, or (ii) the information is subject to
confidentiality obligations to a third party. The parties will hold any such
information obtained pursuant to this Section 6.4 in confidence in accordance
with, and shall otherwise be subject to, the provisions of the confidentiality
letter agreement dated July 13, 2001, between Scient and iXL (the
"Confidentiality Agreement"), which Confidentiality Agreement shall continue in
full force and effect.


                                      61



Any investigation by either of iXL or Scient shall not affect the
representations and warranties of the other.

     6.5. Reasonable Best Efforts.

          (a)  Subject to the terms and conditions of this Agreement, each
               party will use its reasonable best efforts to take, or cause to
               be taken, all actions and to do, or cause to be done, all things
               necessary, proper or advisable under this Agreement and
               applicable laws and regulations to consummate the Mergers and
               the other transactions contemplated by this Agreement as soon as
               practicable after the date hereof, including (i) preparing and
               filing as promptly as practicable all documentation to effect
               all necessary applications, notices, petitions, filings, tax
               ruling requests and other documents and to obtain as promptly as
               practicable all consents, waivers, licenses, orders,
               registrations, approvals, permits, rulings, authorizations and
               clearances necessary or advisable to be obtained from any third
               party and/or any Governmental Entity in order to consummate the
               Mergers the other transactions contemplated by this Agreement
               (collectively, the "Required Approvals"), and (ii) taking all
               reasonable steps as may be necessary to obtain all such
               Necessary Consents and the Required Approvals. In furtherance
               and not in limitation of the foregoing, each party hereto agrees
               to make, as promptly as practicable, to the extent it has not
               already done so, (x) an appropriate filing of a Notification and
               Report Form pursuant to the HSR Act with respect to the
               transactions contemplated hereby (which filing shall in any
               event be made within 10 Business Days of the date hereof), and
               (y) all other necessary filings with other Governmental Entities
               relating to the Mergers, and, in each case, to supply as
               promptly as practicable any additional information and
               documentary material that may be requested pursuant to such laws
               or by such authorities and to use reasonable best efforts to
               cause the expiration or termination of the applicable waiting
               periods under the HSR Act and the receipt of Required Approvals
               under such other laws or from such authorities as soon as
               practicable.

          (b)  In furtherance and not in limitation of the covenants of the
               parties contained in Sections 6.5(a) and 6.5(b), if any
               administrative or judicial action or proceeding, including any
               proceeding by a private party, is instituted (or threatened to
               be instituted) challenging any transaction contemplated by this
               Agreement as violating any Regulatory Law, or if any statute,
               rule, regulation, executive order, decree, injunction or
               administrative order is enacted, entered, promulgated or
               enforced by a Governmental Entity which would make the Mergers
               or any of the transactions contemplated thereby illegal or would
               otherwise prohibit or


                                      62



          materially impair or delay the consummation of the Mergers or the
               other transactions contemplated hereby, each of Scient and iXL
               shall cooperate in good faith in all respects with each other
               and use its reasonable best efforts, to contest and resist any
               such action or proceeding and to have vacated, lifted, reversed,
               rescinded or overturned any decree, judgment, injunction or
               other order, whether temporary, preliminary or permanent, that
               is in effect and that prohibits, prevents or restricts
               consummation of the Mergers or the other transactions
               contemplated by this Agreement and to have such statute, rule,
               regulation, executive order, decree, injunction or
               administrative order repealed, rescinded or made inapplicable so
               as to permit consummation of the transactions contemplated by
               this Agreement. Notwithstanding the foregoing or any other
               provision of this Agreement, nothing in this Section 6.5 shall
               limit a party's right to terminate this Agreement pursuant to
               Article 8 so long as such party at such time of intended
               termination complied with its obligations under this Section
               6.5. For purposes of this Agreement, "Regulatory Law" means all
               Federal, state and foreign statutes, rules, regulations, orders,
               decrees, administrative and judicial doctrines and other laws
               that prohibit, restrict or regulate mergers, acquisitions or
               other business combinations.

          (c)  iXL and its Board of Directors shall, if any State Takeover Law
               becomes applicable to this Agreement, the Mergers or any of the
               transactions contemplated hereby or thereby, take all action
               reasonably necessary to ensure that the Mergers and the other
               transactions contemplated by this Agreement may be consummated
               as promptly as practicable on the terms contemplated hereby or
               thereby and otherwise to minimize the effect of such statute or
               regulation on this Agreement, the Mergers and the other
               transactions contemplated hereby or thereby.

          (d)  Scient and its Board of Directors shall, if any state takeover
               statute or similar statute becomes applicable to this Agreement,
               the Mergers, or any other transactions contemplated hereby or
               thereby, take all action reasonably necessary to ensure that the
               Mergers and the other transactions contemplated by this
               Agreement may be consummated as promptly as practicable on the
               terms contemplated hereby or thereby and otherwise to minimize
               the effect of such statute or regulation on this Agreement, the
               Mergers and the other transactions contemplated hereby or
               thereby.

     6.6. Acquisition Proposals.

          (a)  Without limiting any party's obligations under this Agreement
               (including under Article 5 hereof), each of iXL and Scient
               agrees


                                      63



               that neither it nor any of its Subsidiaries nor any of the
               officers and directors of it or any of its Subsidiaries shall,
               and that it shall use its reasonable best efforts to cause the
               employees, agents and representatives (including investment
               bankers, attorneys, accountants and other professional advisors)
               of it or any of its Subsidiaries not to, directly or indirectly,
               (i) initiate, solicit, induce, encourage or facilitate the
               making or receipt of any Acquisition Proposal; or (ii) have any
               discussion with or provide (by any medium) any material,
               non-public information or data to any Person relating to or
               which insofar as reasonably could be foreseen could lead to the
               making of an Acquisition Proposal, or engage in any negotiations
               concerning an Acquisition Proposal, or facilitate any effort or
               attempt to make or implement an Acquisition Proposal.

               "Acquisition Proposal" means, other than the transactions
               contemplated by this Agreement among the parties hereto, any
               offer or proposal for, or any indication of interest, letter of
               intent, memorandum of understanding, term sheet or inquiry
               relating to, (A) a merger, reorganization, share exchange,
               consolidation, business combination, recapitalization,
               liquidation, dissolution or similar transaction involving it or
               any of its Significant Subsidiaries, (B) any transfer, lease,
               assignment, exchange, purchase or sale of 15% or more of the
               consolidated assets (including, without limitation, capital
               stock of its Subsidiaries) of such party and its Subsidiaries,
               taken as a whole, or (C) any purchase or sale of, or tender or
               exchange offer for, any equity or voting debt securities of such
               party, which if consummated, would result in any Person
               acquiring "beneficial ownership" (within the meaning of Rule
               13d-3 under the Exchange Act) of any securities representing 15%
               or more of the outstanding voting power of such party (or of the
               surviving, resulting or ultimate parent entity in such
               transaction) or any of its Significant Subsidiaries.

          (b)  Notwithstanding anything in this Agreement to the contrary
               (including, without limitation, the provisions of 6.5(a)), each
               of iXL and Scient and its Board of Directors (including any duly
               constituted committee thereof) shall be permitted to engage in
               any discussions or negotiations with, or provide (by any medium)
               material, non-public data or information to, any Person in
               response to a bona fide, written Acquisition Proposal by any
               such Person (not made or received in violation of this Section
               6.6), if and only to the extent that, (i) the Required iXL Vote
               and the Required Scient Vote shall not have been obtained
               (giving effect to obligations of iXL and Scient, respectively,
               specified in Section 6.1 hereof), (ii) its Board of Directors
               concludes in good faith after consultation with independent
               outside counsel and independent


                                      64



               financial advisors that such Acquisition Proposal is reasonably
               expected to lead to a Superior Proposal, (iii) prior to
               providing any information or data to any Person in connection
               with an Acquisition Proposal by any such Person, its Board of
               Directors receives from such Person an executed confidentiality
               agreement having provisions that are customary in such
               agreements relative to proposed transactions such as the
               Acquisition Proposal, as advised by outside counsel, provided
               that if such confidentiality agreement contains provisions that
               are less restrictive than the comparable provision, or omits
               restrictive provisions, contained in the Confidentiality
               Agreement, then upon execution of such confidentiality
               agreement, the Confidentiality Agreement will be deemed to be
               amended (and, in fact, thereafter promptly shall be amended) to
               contain only such less restrictive provisions or to omit such
               restrictive provisions (as the case may be), and (iv) prior to
               providing any material, non-public data or information or data
               to any Person or entering into discussions or negotiations with
               any Person, such party notifies the other party promptly (and,
               in any case, within 24 hours) of such inquiries, proposals or
               offers received by, any such information requested from, or any
               such discussions or negotiations sought to be initiated or
               continued with, such Person or any of its representatives
               indicating, in connection with such notice, the name of such
               Person and the material terms and conditions (including for this
               purpose the price, structure, intended accounting and tax
               treatment, closing conditions, anticipated closing date, and
               requisite regulatory approvals, to the extent then known or
               specified by such Person) of any inquiries, indications of
               interest, proposals, term sheets or offers. Each of iXL and
               Scient agrees that it will promptly keep the other party
               informed of the status and terms of any such inquiries,
               indications of interest, proposals, term sheets or offers and
               the status and terms of any such discussions or negotiations and
               promptly shall provide each other with true and complete copies
               of all documents and instruments related thereto.

               If (x) iXL makes a Change in the iXL Recommendation or (y)
               Scient makes a Change in the Scient Recommendation, in each case
               in connection with an Acquisition Proposal, such party (A) shall
               provide immediate written notice to the other party advising
               such other party of such occurrence and specifying the identity
               of the Person making the Acquisition Proposal as well as the
               material terms and conditions (including for this purpose,
               price, structure, intended accounting and tax treatment, closing
               conditions, anticipated closing date and requisite regulatory
               approvals, to the extent then known) of such Acquisition
               Proposal and (B) shall postpone or delay the iXL Stockholders
               Meeting or the Scient


                                      65



               Stockholders Meeting, as the case may be, for not less than five
               days after the date such written notice is provided to the other
               party.

               Each of iXL and Scient agrees that it shall, and shall cause its
               officers, directors and representatives to, immediately cease
               and cause to be terminated all activities, discussions and
               negotiations existing as of the date of this Agreement with any
               parties conducted heretofore with respect to any Acquisition
               Proposal. Each of iXL and Scient agrees that it will promptly
               inform its directors, officers, key employees, agents and
               representatives of the obligations undertaken in this Section
               6.6 and use its reasonable best efforts to obtain their express
               acknowledgment (which need not be in writing) of the terms
               hereof.

               Nothing in this Section 6.6 shall (i) permit iXL or Scient to
               terminate this Agreement (except as specifically provided in
               Article 8 hereof) or (ii) affect any other obligation of iXL or
               Scient under this Agreement. Notwithstanding any provision of
               this Agreement, neither iXL nor Scient shall submit to the vote
               of its stockholders at the iXL Stockholders Meeting or the
               Scient Stockholders Meeting, as applicable, any Acquisition
               Proposal, other than the iXL Merger or Scient Merger,
               respectively.

     "Superior Proposal" means with respect to iXL or Scient, as the case may
be, a bona fide, written proposal made by a Third Party (1) regarding a merger,
reorganization, consolidation, share exchange, business combination,
recapitalization or similar transaction involving such party as a result of
which the other party thereto or its stockholders would own a majority of the
outstanding combined voting power of the entity surviving or resulting from
such transaction (or the ultimate parent entity thereof), (2) which is on terms
which the Board of Directors of such party in good faith concludes (following
receipt of the advice of an independent financial advisor of national standing
and of independent outside counsel), after taking into account, among other
things, the long-term strategic objectives of such party and all legal,
financial, tax, accounting, regulatory and other aspects of the proposal and
the Person making the proposal (including its likelihood of consummation and
the anticipated timing thereof), (3) which, if consummated, would result in a
transaction that is more favorable to its stockholders (in their capacities as
stockholders), from a financial point of view, than the transactions
contemplated by this Agreement, and (4) which provides that any requisite
external financing (sufficient to pay the cash portion, if any, of the proposed
transaction consideration and expenses related thereto) is either then
committed or otherwise funded and not subject to any material contingency
(other than customary third party lender "market outs").

     "Change in the iXL Recommendation" means (x) withdrawing, modifying or
qualifying (or proposing publicly or otherwise to withdraw, modify or qualify)
in any manner adverse to Scient the iXL Recommendation, or (y) taking any
action or making


                                      66



any statement (not described in the foregoing clause (x)) in connection with
the iXL Stockholders Meeting otherwise inconsistent with the iXL
Recommendation.

     "Change in the Scient Recommendation" means (x) withdrawing, modifying, or
qualifying (or proposing publicly or otherwise to withdraw, modify or qualify)
in any manner adverse to iXL the Scient Recommendation, or (y) taking any
action or making any statement (not described in the foregoing clause (x)) in
connection with the Scient Stockholders Meeting otherwise inconsistent with the
Scient Recommendation. 6.7. Fees and Expenses. Subject to Section 8.2, whether
or not the Mergers are consummated, all Expenses incurred in connection with
this Agreement and the transactions contemplated hereby shall be paid by the
party incurring such Expenses, except that if the Mergers are consummated,
Holdco shall pay, or cause to be paid, any and all Expenses incurred by the
parties hereto; provided, however, Expenses incurred in connection with (i) the
preparation, filing, printing and mailing of the Joint Proxy
Statement/Prospectus and Form S-4, and (ii) all fees and costs relating to all
necessary filings (and the prosecution thereof) under the HSR Act, shall be
shared equally by iXL and Scient irrespective of whether the Mergers are
consummated. As used in this Agreement, "Expenses" includes all out-of-pocket
expenses (including, without limitation, all fees and expenses of counsel,
accountants, investment bankers, experts and consultants to a party hereto and
its Affiliates) incurred by a party or on its behalf in connection with or
related to the authorization, preparation, negotiation, execution and
performance of this Agreement and the Voting Agreements and the transactions
contemplated hereby, including the preparation, printing, filing and mailing of
the Joint Proxy Statement/Prospectus and Form S-4 and the solicitation of
stockholder approvals and all other matters related to the transactions
contemplated hereby and thereby. The parties hereto shall cooperate with each
other in preparing, executing and filing all Tax Returns with respect to
property or transfer taxes.

     6.8. Directors' and Officers' Indemnification and Insurance.

          (a)  Holdco shall (i) indemnify and hold harmless and provide
               advancement of expenses to all past and present directors,
               officers and employees of Scient and its Subsidiaries (in all of
               their capacities) (x) to the same extent such persons are
               indemnified or have the right to advancement of expenses at the
               date of this Agreement by Scient pursuant to Scient's
               certificate of incorporation, bylaws and indemnification
               agreements, if any, in existence on the date hereof with any
               directors, officers and employees of Scient and its
               Subsidiaries, and (y) without limitation to clause (x), to the
               fullest extent permitted by law, in each case for acts or
               omissions occurring at or prior to the Effective Time (including
               for directors' acts or omissions occurring in connection with
               the approval of this Agreement and the consummation of the
               transactions contemplated hereby), (ii) include and cause to be
               maintained in effect in Holdco's (or any successor's)
               certificate of incorporation and bylaws after the Effective
               Time, provisions


                                      67



               regarding elimination of liability of directors, indemnification
               of officers, directors and employees and advancement of expenses
               which are, in the aggregate, no less advantageous to the
               intended beneficiaries than the corresponding provisions
               contained in the current certificate of incorporation and bylaws
               of Scient, and (iii) cause to be maintained for a period of six
               years after the Effective Time the current policies of
               directors' and officers' liability insurance and fiduciary
               liability insurance maintained by Scient (provided that Holdco
               (or any successor) may substitute therefor one or more policies
               of at least the same scope of coverage and amounts containing
               terms and conditions which are, in the aggregate, no less
               advantageous to the insured) with respect to claims arising from
               facts or events that occur at or before the Effective Time;
               provided, however, that in no event shall Holdco be required to
               expend in any one year an amount in excess of 200% of the annual
               premiums currently paid by Scient for such insurance; and,
               provided further that if the annual premiums of such insurance
               coverage exceed such amount, Holdco shall be obligated to obtain
               a policy with the greatest coverage available for a cost not
               exceeding such amount. The obligations of Holdco under this
               Section 6.8(a) shall not be terminated or modified in such a
               manner as to adversely affect any indemnitee to whom this
               Section 6.8(a) applies without the consent of such affected
               indemnitee (it being expressly agreed that the indemnitees to
               whom this Section 6.8(a) applies shall be third party
               beneficiaries of this Section 6.8(a)).

          (b)  Holdco shall (i) indemnify and hold harmless and provide
               advancement of expenses to all past and present directors,
               officers and employees of iXL and its Subsidiaries (in all of
               their capacities) (x) to the same extent such persons are
               indemnified or have the right to advancement of expenses at the
               date of this Agreement by iXL pursuant to iXL's certificate of
               incorporation, bylaws and indemnification agreements, if any, in
               existence on the date hereof with any directors, officers and
               employees of iXL and its Subsidiaries, and (y) without
               limitation to clause (x), to the fullest extent permitted by
               law, in each case for acts or omissions occurring at or prior to
               the Effective Time (including for directors acts or omissions
               occurring in connection with the approval of this Agreement and
               the consummation of the transactions contemplated hereby), (ii)
               include and cause to be maintained in effect in Holdco's (or any
               successor's) certificate of incorporation and bylaws after the
               Effective Time, provisions regarding elimination of liability of
               directors, indemnification of officers, directors and employees
               and advancement of expenses which are, in the aggregate, no less
               advantageous to the intended beneficiaries than the
               corresponding provisions contained in the current certificate of


                                      68



               incorporation and bylaws of iXL, and (iii) cause to be
               maintained for a period of six years after the Effective Time
               the current policies of directors' and officers' liability
               insurance and fiduciary liability insurance maintained by iXL
               (provided that Holdco (or any successor) may substitute therefor
               one or more policies of at least the same scope of coverage and
               amounts containing terms and conditions which are, in the
               aggregate, no less advantageous to the insured) with respect to
               claims arising from facts or events that occur at or before the
               Effective Time; provided, however, that in no event shall Holdco
               be required to expend in any one year an amount in excess of
               200% of the annual premiums currently paid by iXL for such
               insurance; and, provided further that if the annual premiums of
               such insurance coverage exceed such amount, Holdco shall be
               obligated to obtain a policy with the greatest coverage
               available for a cost not exceeding such amount. The obligations
               of Holdco under this Section 6.8(b) shall not be terminated or
               modified in such a manner as to adversely affect any indemnitee
               to whom this Section 6.8(b) applies without the consent of such
               affected indemnitee (it being expressly agreed that the
               indemnitees to whom this Section 6.8(b) applies shall be third
               party beneficiaries of this Section 6.8(b)).

     6.9. Public Announcements. iXL and Scient shall work together in good
faith to develop a joint public relations and communications plan with respect
to stockholders, market professionals, the investment community, employees,
customers and suppliers and each party shall use best efforts (i) to ensure
that all press releases and other public statements and announcements
(including, without limitation, pursuant to Rules 165 and 425 under the
Securities Act and 14a-12 under the Exchange Act) with respect to the
transactions contemplated hereby shall be consistent with such joint
communications and public relations plan, and (ii) unless otherwise required by
applicable law or by obligations pursuant to any listing agreement with or
rules of any national securities exchange or U.S. inter-dealer quotation system
of a registered national securities association, to consult with each other and
give effect to the reasonable comments of the other before issuing any press
release or, to the extent practical, otherwise making any public statement or
other announcement with respect to this Agreement or the transactions
contemplated hereby. The first public announcement of the transactions
contemplated by this Agreement made by iXL and Scient, respectively, pursuant
to Rule 165 under the Securities Act shall contain the iXL Recommendation and
the Scient Recommendation. In addition to the foregoing, except to the extent
disclosed in or consistent with the Joint Proxy Statement/Prospectus in
accordance with the provisions of Section 6.1, neither iXL nor Scient shall
issue any press release or otherwise make any public statement, announcement or
disclosure concerning the other party or the other party's business, financial
condition or results of operations without the consent of the other party,
which consent shall not be unreasonably withheld or delayed.

     6.10. Listing of Shares of Holdco Common Stock. Holdco shall use its best
efforts to cause the shares of Holdco Common Stock to be issued in the Merger
and the


                                      69



shares of Holdco Common Stock to be reserved for issuance upon exercise of the
Scient Stock Options and iXL Stock Options to be approved for listing on the
Nasdaq Stock Market, subject to official notice of issuance, prior to the
Effective Time.

     6.11. Affiliates.

          (a)  Not less than 45 days prior to the date of the Scient
               Stockholders Meeting, Scient shall deliver to iXL a letter
               identifying all Persons who, in the reasonable judgment of
               Scient, may be deemed at the time this Agreement is submitted
               for adoption by the stockholders of Scient, "affiliates" of
               Scient for purposes of Rule 145(a) under the Securities Act and
               applicable SEC rules and regulations, and such list shall be
               updated as necessary to reflect changes from the date thereof.
               Scient shall use its reasonable best efforts to cause each
               Person identified on such list to deliver to Holdco not less
               than 30 days prior to the Effective Time, a written agreement
               substantially in the form attached as Exhibit H, hereto (an
               "Affiliate Agreement").

          (b)  Not less than 45 days prior to the date of the iXL Stockholders
               Meeting, iXL shall deliver to Scient a letter identifying all
               Persons who, in the reasonable judgment of iXL, may be deemed at
               the time this Agreement is submitted for adoption by the
               stockholders of iXL, "affiliates" of iXL for purposes of Rule
               145(a) under the Securities Act and applicable SEC rules and
               regulations, and such list shall be updated as necessary to
               reflect changes from the date thereof. iXL shall use its
               reasonable best efforts to cause each Person identified on such
               list to deliver to Holdco not less than 30 days prior to the
               Effective Time, an Affiliate Agreement. The parties to the
               Affiliate Agreement pursuant to Section 6.11(a) and (b) shall be
               referred to herein as the "Rule 145 Affiliates".

          (c)  In conjunction with the Closing, Holdco shall make available to
               each of the Rule 145 Affiliates the right to enter into a
               registration rights agreement (the "Affiliate Registration
               Rights Agreement"), substantially in the form of Exhibit I.

     6.12. Section 16 Matters. Prior to the Effective Time, iXL and Scient
shall take all such steps as may be required to cause any dispositions of
Scient Common Stock or iXL Common Stock (including derivative securities with
respect to Scient Common Stock or iXL Common Stock) or acquisitions of Holdco
Common Stock (including derivative securities with respect to Holdco Common
Stock) resulting from the transactions contemplated by Article 1 or Article 2
of this Agreement by each individual who is subject to the reporting
requirements of Section 16(a) of the Exchange Act with respect to iXL and
Scient to be exempt under Rule 16b-3 promulgated under the Exchange Act.


                                      70



     6.13. Holdco Stock Option Plan. Holdco shall be authorized to adopt an
employee stock option plan effective as of the Closing Date under which it
shall be permitted to grant stock options to purchase shares of Holdco Common
Stock to employees of Scient and iXL and their respective Subsidiaries, the
material terms of which will be as set forth in Schedule 6.13 hereto. The
continuing employees of each of iXL and Scient will be granted options in
Holdco in a fair and equitable manner pursuant to one or more formulas
reasonably determined by the Holdco compensation committee in its sole
discretion.

     6.14. Notices of Certain Events. Each of iXL and Scient shall promptly
notify the other of:

          (a)  any notice or other communication from any Person alleging that
               the consent of such Person is or may be required in connection
               with the transactions contemplated by this Agreement;

          (b)  any notice or other communication from any governmental or
               regulatory agency or authority in connection with the
               transactions contemplated by this Agreement; and

          (c)  any actions, suits, claims, investigations or proceedings
               commenced or, to its knowledge, threatened against, relating to
               or involving or otherwise affecting it or any of its
               Subsidiaries that, if pending on the date of this Agreement,
               would have been required to have been disclosed pursuant to
               Section 4.1(j) or 4.2(j), as the case may be, or that related to
               the consummation of the transactions contemplated by this
               Agreement.

     6.15. Amendment of Rights Agreement. Prior to the Effective Time, Scient
shall duly amend the Rights Agreement to (a) render the Rights Agreement and
the Rights inapplicable to this Agreement and the Mergers, (b) ensure that (x)
none of the parties to this Agreement shall become or be deemed to be an
"Acquiring Person" (as defined in the Rights Agreement), (y) no "Distribution
Date" or "Stock Acquisition Date" (as such terms are defined in the Rights
Agreement) shall occur, and (z) the Rights shall not separate from the
associated shares of Scient Common Stock or provide the holders thereof the
right to acquire any securities of any Person (or any interest therein or right
thereto), in each case as a result of the execution, delivery or performance of
this Agreement or the public announcement, commencement, expiration, extension,
pendency or consummation of the Mergers, and (c) provide that the Rights
Agreement automatically shall terminate at the Effective Time in accordance
with the terms thereof and the terms and conditions of this Agreement, (the
amendments referred to in clauses (a), (b) and (c) being hereafter collectively
referred to as, the "Rights Agreement Amendments").

                        ARTICLE 7. CONDITIONS PRECEDENT


                                      71



     7.1. Conditions to Each Party's Obligation to Effect its Respective
Merger. The respective obligations of Scient and iXL to effect the Scient
Merger and iXL Merger are subject to the satisfaction or waiver on or prior to
the Closing Date of the following conditions:

          (a)  Stockholder Approval. Scient shall have obtained the Required
               Scient Vote and iXL shall have obtained the Required iXL Vote.

          (b)  No Injunctions or Restraints, Illegality. No provision of any
               applicable law or regulation and no judgment, injunction, order
               or decree of a court of competent jurisdiction shall prohibit
               the consummation of the Mergers.

          (c)  HSR Act. The waiting period (and any extension thereof)
               applicable to the Mergers under the HSR Act shall have been
               terminated or shall have expired.

          (d)  Listing. The shares of Holdco Common Stock to be issued in the
               Mergers and such other shares of Holdco Common Stock to be
               reserved for issuance in connection with the Mergers shall have
               been approved for listing on the Nasdaq Stock Market, subject to
               official notice of issuance.

          (e)  Effectiveness of the Form S-4. The Form S-4 shall have been
               declared effective by the SEC under the Securities Act and no
               stop order suspending the effectiveness of the Form S-4 shall
               have been issued by the SEC and no proceedings for that purpose
               shall have been initiated or threatened by the SEC.

     7.2. Additional Conditions to Obligations of iXL. The obligations of iXL
to effect the iXL Merger are subject to the satisfaction, or waiver by iXL, on
or prior to the Closing Date of the following additional conditions:

          (a)  Representations and Warranties. Each of the representations and
               warranties of Scient set forth in this Agreement, disregarding
               all qualifications and exceptions contained therein relating to
               materiality or Material Adverse Effect, shall be true and
               correct in all material respects as of the date of this
               Agreement and as of the Closing Date as though made on and as of
               the Closing Date (except to the extent that such representations
               and warranties expressly speak as of another date, in which case
               such representations and warranties shall be true and correct in
               all respects as of such other date), except where the failure of
               such representations and warranties to be true and correct would
               not, individually or in the aggregate, reasonably be expected to
               have a Material Adverse Effect on Scient; and iXL shall have
               received a


                                      72



               certificate of a senior executive officer of Scient and a senior
               financial officer to such effect.

          (b)  Performance of Obligations of Scient. Scient shall have
               performed or complied with all agreements and -- covenants
               required to be performed by it under this Agreement at or prior
               to the Closing Date that are qualified as to materiality or
               Material Adverse Effect and shall have performed or complied in
               all material respects with all other material agreements and
               covenants required to be performed by it under this Agreement at
               or prior to the Closing Date that are not so qualified, and iXL
               shall have received a certificate of an senior executive officer
               of Scient and a senior financial officer of Scient to such
               effect.

          (c)  Tax Opinion. iXL shall have received from Greenberg Traurig,
               LLP, counsel to iXL, on the Closing Date, a written opinion to
               the effect that for federal income tax purposes the iXL Merger
               will constitute a reorganization within the meaning of Section
               368(a) of the Code. In rendering such opinion, counsel to iXL
               shall be entitled to rely upon information, representations and
               assumptions provided by Holdco, iXL and Scient substantially in
               the form of Exhibit J, (allowing for such amendments to the
               representations as counsel to iXL deems reasonably necessary).

     7.3. Additional Conditions to Obligations of Scient. The obligations of
Scient to effect the Scient Merger are subject to the satisfaction, or waiver
by Scient, on or prior to the Closing Date of the following additional
conditions:

          (a)  Representations and Warranties. Each of the representations and
               warranties of iXL set forth in this Agreement, disregarding all
               qualifications and exceptions contained therein relating to
               materiality or Material Adverse Effect, shall be true and
               correct in all material respects as of the date of this
               Agreement and as of the Closing Date as though made on and as of
               the Closing Date (except to the extent that such representations
               and warranties expressly speak as of another date, in which case
               such representations and warranties shall be true and correct in
               all material respects as of such other date), except where the
               failure of such representations and warranties to be true and
               correct would not, individually or in the aggregate, reasonably
               be expected to have a Material Adverse Effect on iXL; and Scient
               shall have received a certificate of a senior executive officer
               and a senior financial officer of iXL to such effect.

          (b)  Performance of Obligations of iXL. iXL shall have performed or
               complied with all agreements and - covenants required to be
               performed by it under this Agreement at or prior to the Closing


                                      73



               Date that are qualified as to materiality or Material Adverse
               Effect and shall have performed or complied in all material
               respects with all other material agreements and covenants
               required to be performed by it under this Agreement at or prior
               to the Closing Date that are not so qualified, and Scient shall
               have received a certificate of a senior executive officer and a
               senior financial officer of iXL to such effect.

          (c)  Tax Opinion. Scient shall have received from Davis Polk &
               Wardwell, counsel to Scient, on the Closing Date, a written
               opinion to the effect that for federal income tax purposes the
               Scient Merger will constitute a reorganization within the
               meaning of Section 368(a) of the Code. In rendering such
               opinion, counsel to Scient shall be entitled to rely upon
               information, representations and assumptions provided by Holdco,
               iXL and Scient substantially in the form of Exhibit K, (allowing
               for such amendments to the representations as counsel to Scient
               deems reasonably necessary).

                      ARTICLE 8. TERMINATION AND AMENDMENT

     8.1. Termination. This Agreement may be terminated at any time prior to
the Effective Time, by action taken or authorized by the Board of Directors of
the terminating party or parties, and except as provided below, whether before
or after approval of the matters presented in connection with the Mergers by
the stockholders of Scient or iXL:

          (a)  By the mutual written consent of iXL and Scient;

          (b)  By either Scient or iXL, if the Effective Time shall not have
               occurred at or before 5:30 p.m., Eastern time, on December 31,
               2001 (the "Termination Date"); provided, however, that the
               Termination Date may be extended to a date mutually agreed to by
               iXL and Scient (which such extended date shall not be earlier
               than March 31, 2002) if, and only if, the condition set forth in
               Section 7.1(e) shall not have been satisfied on or prior to the
               Termination Date; provided, further, however, that the right to
               terminate this Agreement under this Section 8.1(b) shall not be
               available to any party whose willful failure to fulfill any
               obligation under this Agreement (including, without limitation,
               such party's obligations set forth in Section 6.5) has been the
               cause of or resulted in the failure of the Effective Time to
               occur on or before the Termination Date (or any extended date as
               contemplated by the immediately preceding proviso);

          (c)  By either Scient or iXL, if any Governmental Entity shall have
               issued an order, decree or ruling or taken any action
               restraining, enjoining or otherwise prohibiting the transactions
               contemplated


                                      74



               by this Agreement, and such order, decree, ruling or other
               action shall have become final and nonappealable, provided,
               however, that the right to terminate this Agreement under this
               Section 8.1(c) shall not be available to any party whose willful
               failure to comply with Section 6.5 has been the cause of such
               action;

          (d)  By either Scient or iXL, if the Required iXL Vote or the
               Required Scient Vote shall not have been obtained by reason of
               the failure to obtain the required vote at a duly held meeting
               of stockholders or of any adjournment or postponement thereof at
               which the vote was taken;

          (e)  By iXL, if Scient shall have failed to (i) make the Scient
               Recommendation or effected a Change in the Scient Recommendation
               (or resolved to take any such action, whether or not permitted
               by the express terms of this Agreement), or (ii) duly notice and
               convene the Scient Stockholders Meeting in accordance with
               Section 6.1(b);

          (f)  By Scient, if iXL shall have failed to (i) make the iXL
               Recommendation or effected a Change in the iXL Recommendation
               (or resolved to take any such action, whether or not permitted
               by the express terms of this Agreement), or (ii) duly notice and
               convene the iXL Stockholders Meeting in accordance with Section
               6.1(c);

          (g)  By Scient, if iXL shall have breached or failed to perform any
               of its representations, warranties, covenants or other
               agreements contained in this Agreement such that the conditions
               set forth in Section 7.3(a) or (b) are not capable of being
               satisfied on or before the Termination Date; or

          (h)  By iXL, if Scient shall have breached or failed to perform any
               of its representations, warranties, covenants or other
               agreements contained in this Agreement such that the conditions
               set forth in Section 7.2(a) or (b) are not capable of being
               satisfied on or before the Termination Date.

     8.2. Effect of Termination.

          (a)  If this Agreement is terminated by either Scient or iXL as
               provided in Section 8.1, this Agreement forthwith shall become
               void and there shall be no liability or obligation on the part
               of any of the parties or their respective officers or directors
               except with respect to the second sentence of Section 6.4,
               Section 6.7, this Section 8.2 and Article 9, which provisions
               shall survive such termination, and except that, notwithstanding
               anything to the contrary contained in


                                      75



               this Agreement, neither iXL nor Scient shall be relieved or
               released from any liabilities or damages arising out of its
               willful and material breach of this Agreement.

          (b)  If a Scient Payment Event occurs, Scient shall pay iXL (by wire
               transfer of immediately available funds to an account specified
               by iXL), if, pursuant to clause (x) of the immediately following
               sentence, simultaneously with the occurrence of such Payment
               Event or, if pursuant to clause (y) of the immediately following
               paragraph, not later than two Business Days next following such
               Scient Payment Event, a termination fee of $7,500,000.

               "Scient Payment Event" means (x) the termination of this
               Agreement by iXL pursuant to Section 8.1(e) or (y) the
               occurrence of the following event in connection with the
               termination by iXL of this Agreement pursuant to Section 8.1(d):
               prior to such termination, an Acquisition Proposal with respect
               to Scient shall have been publicly announced or otherwise
               communicated publicly to the senior management, Board of
               Directors, representatives or stockholders of Scient (a "Scient
               Public Proposal").

          (c)  If an iXL Payment Event occurs, iXL shall pay Scient (by wire
               transfer of immediately available funds to an account specified
               by Scient), if, pursuant to clause (x) of the immediately
               following sentence, simultaneously with the occurrence of such
               iXL Payment Event or, if pursuant to clause (y) of the
               immediately following paragraph, not later than two Business
               Days next following such iXL Payment Event, a termination fee of
               $7,500,000.

               "iXL Payment Event" means (x) the termination by Scient of this
               Agreement pursuant to Section 8.1(f) or (y) the occurrence of
               the following event in connection with the termination by Scient
               of this Agreement pursuant to Section 8.1(d): prior to such
               termination, an Acquisition Proposal with respect to iXL shall
               have been publicly announced or otherwise communicated publicly
               to the senior management, Board of Directors, representatives or
               stockholders of iXL (an "iXL Public Proposal").

          (d)  The parties acknowledge that the agreements contained in this
               Section 8.2 are an integral part of the transactions
               contemplated by this Agreement, and that, without these
               agreements, none of the parties would enter into this Agreement;
               accordingly, if either iXL or Scient fails promptly to pay any
               amount due pursuant to this Section 8.2, and, in order to obtain
               such payment, the other party commences a suit which results in
               a judgment against such party for the fee set forth in this
               Section 8.2, such party shall pay to the


                                      76



               other party its costs and expenses (including attorneys' fees
               and expenses) in connection with such suit, together with
               interest on the amount of the fee at the prime rate thereof as
               announced by Citibank, N.A. in effect on the date such payment
               was required to be made notwithstanding the provisions of
               Section 6.7.

          The parties hereto agree that any remedy or amount payable pursuant
          to this Section 8.2 shall not preclude any other remedy or amount
          payable hereunder and shall not be an exclusive remedy for any breach
          of any representation, warranty, covenant or agreement contained in
          this Agreement.

     8.3. Amendment. This Agreement may be amended by the parties hereto, by
action taken or authorized by their respective Boards of Directors, at any time
before or after approval of the matters presented in connection with the
Mergers by the stockholders of Scient and iXL, but, after any such approval, no
amendment shall be made which by law or in accordance with the rules of any
national securities exchange or U.S. inter-dealer quotation system of a
registered national securities association requires further approval by such
stockholders without such further approval. This Agreement may not be amended
except by an instrument in writing signed on behalf of each of the parties
hereto.

     8.4. Extension; Waiver. At any time prior to the Effective Time, the
parties hereto, by action taken or authorized by their respective Boards of
Directors, may, to the extent legally allowed, (i) extend the time for the
performance of any of the obligations or other acts of the other parties
hereto, (ii) waive any inaccuracies in the representations and warranties
contained herein or in any document delivered pursuant hereto and (iii) waive
compliance with any of the agreements or conditions contained herein. Any
agreement on the part of a party hereto to any such extension or waiver shall
be valid only if set forth in a written instrument signed on behalf of such
party. The failure of any party to this Agreement to assert any of its rights
under this Agreement or otherwise shall not constitute a waiver of those
rights.

                         ARTICLE 9. GENERAL PROVISIONS

     9.1. Non-Survival of Representations, Warranties and Agreements. None of
the representations, warranties, covenants and other agreements in this
Agreement or in any instrument delivered pursuant to this Agreement, including
any rights arising out of any breach of such representations, warranties,
covenants, agreements and other provisions, shall survive the Effective Time,
except for those covenants, agreements and other provisions contained herein
(including Section 6.8 and Section 6.2 and Schedule 6.2(a)) that by their terms
apply or are to be performed in whole or in part after the Effective Time and
this Article 9.

     9.2. Notices. All notices and other communications hereunder shall be in
writing and shall be deemed duly given (a) on the date of delivery if delivered
personally, or by telecopy or facsimile, upon confirmation of receipt, (b) on
the first Business Day following the date of dispatch if delivered by a
recognized next-day courier service or (c) on the tenth Business Day


                                      77



following the date of mailing if delivered by registered or certified mail,
return receipt requested, postage prepaid. All notices hereunder shall be
delivered as set forth below, or pursuant to such other instructions as may be
designated in writing by the party to receive such notice:

     (a)  if to iXL, India Merger Sub or Holdco, to:

          Theodore Browne, Esq.
          Vice President and General Counsel
          c/o iXL Enterprises, Inc. 1600 Peachtree Street, NW
          Atlanta, GA 30309
          Phone: (404) 279-1000
          Fax:   (404) 279-6844

          with copies (which shall not constitute notice pursuant to
          this Section 9.2) to each of:

          James S. Altenbach, Esq.
          c/o Greenberg Traurig, LLP
          3290 Northside Parkway, N.W.
          Suite 400
          Atlanta, GA 30327
          Phone: (678) 553-2444
          Fax:   (678) 553-2445
          e-mail: altenbachj@gtlaw.com

                          - and -

          Clifford E. Neimeth, Esq.
          c/o Greenberg Traurig, LLP
          The Met Life Building
          200 Park Avenue
          New York, New York 10021
          Phone:  (212) 801-9383
          Fax:    (212) 801-6400
          e-mail: neimethc@gtlaw.com

     (b)  if to Scient to:

          Christina M. Bark, Esq.
          Corporate Counsel
          Scient Corporation
          860 Broadway
          New York, NY  10003
          Phone:  (917) 534-8332
          Fax:    (917) 534-8845
          e-mail: cbark@scient.com


                                      78



          with a copy (which shall not constitute notice pursuant to
          Section 9.2) to:

          David L. Caplan, Esq.
          c/o Davis Polk & Wardwell
          450 Lexington Avenue
          New York, New York
          Phone:  (212) 450-2352
          Fax:    (212) 450-3800
          e-mail: david.caplan@dpw.com

     (c)  if to Holdco, India Merger Sub or Sierra Merger Sub to each of the
          parties entitled to receive notice pursuant to this Section 9.2 for
          iXL and Scient.

     9.3. Interpretation. All terms defined in this Agreement shall have the
defined meanings when used in any certificate or other document made or
delivered pursuant hereto unless specifically otherwise defined therein. The
definitions contained in this Agreement are applicable to the singular as well
as the plural forms of such terms and to the masculine as well as the feminine
and neutral genders of such term. Any agreement, instrument or statute defined
or referred to herein or in any agreement or instrument that is referred to
herein means such agreement, instrument or statute as from time to time
amended, modified or supplemented, including in the case of agreements or
instruments by waiver or consent, and in the case of statutes, by comparable
successor statutes, and references to all attachments thereto and instruments
incorporated therein. Each of the parties hereto has participated in the
drafting and negotiation of this Agreement such that if any ambiguity or
question of intent or interpretation arises, this Agreement shall be construed
as if it was drafted by all of the parties hereto, collectively, and no
presumption or burden of proof shall arise favoring or disfavoring any party by
virtue of the authorship of any of the provisions of this Agreement.

     When a reference is made in this Agreement to Articles, Sections, Exhibits
or Schedules, such reference shall be to an Article or Section of or Exhibit or
Schedule to this Agreement unless otherwise indicated. The table of contents
and headings contained in this Agreement are for reference purposes only and
shall not affect in any way the intended meaning or interpretation of this
Agreement. Whenever the words "include," "includes" or "including" are used in
this Agreement, they shall be deemed to be followed by the words "without
limitation" and, thus, shall indicate illustrative examples of the matters that
follow and are neither intended nor shall they constitute exhaustive or
all-inclusive statements and examples.

     In addition, each Section of this Agreement is qualified by the matters
set forth with respect to such Section on the iXL Disclosure Schedule, the
Scient Disclosure Schedule and the Schedules to this Agreement, as applicable,
to the extent specified therein and such other Sections of this Agreement to
the extent (including by way of conspicuous cross-reference) a matter in such
Section is disclosed in such a way as to make its relevance called for by such
other Section readily apparent.


                                      79



     9.4. Counterparts. This Agreement may be executed in counterparts, all of
which shall be considered one and the same agreement and shall become effective
when one or more counterparts have been signed by each of the parties and
delivered to the other party; it being understood that both parties need not
sign the same counterpart. Signatures transmitted by facsimile or other
comparable means shall be deemed to constitute an original.

     9.5. Entire Agreement; No Third Party Beneficiaries.

          (a)  This Agreement, the Voting Agreements, the Confidentiality
               Agreement and all of the exhibits and schedules hereto
               (including the iXL Disclosure Schedule and the Scient Disclosure
               Schedule) and the other agreements and instruments of the
               parties delivered in connection herewith constitute the entire
               agreement and understanding and supersede all prior agreements
               and understandings, both written and oral, among the parties
               hereto with respect to the subject matter hereof.

          (b)  This Agreement shall be binding upon and inure solely to the
               benefit of each party hereto, and nothing in this Agreement,
               express or implied, is intended to or shall confer upon any
               other Person any right, benefit or remedy of any nature
               whatsoever under or by reason of this Agreement, other than
               Section 6.8 (which is intended to be for the benefit of the
               Persons covered thereby).

     9.6. Governing Law. This Agreement shall be governed and construed in
accordance with the internal substantive and procedural laws of the State of
Delaware (without giving effect to any conflicts of law principles thereof).

     9.7. Severability. If any term or other provision of this Agreement is
invalid, illegal or incapable of being enforced by any law or public policy,
all other terms and provisions of this Agreement shall nevertheless remain in
full force and effect so long as the economic or legal substance of the
transactions contemplated hereby is not affected in any manner materially
adverse to any party. Upon such determination that any term or other provision
is invalid, illegal or incapable of being enforced, the parties hereto shall
negotiate in good faith to modify this Agreement so as to effect the original
intent of the parties as closely as possible in an acceptable manner in order
that the transactions contemplated hereby are consummated as originally
contemplated to the greatest extent possible.

     9.8. Assignment. Neither this Agreement nor any of the rights, interests
or obligations hereunder shall be assigned by any of the parties hereto, in
whole or in part (whether by operation of law or otherwise), without the prior
written consent of the other parties, and any attempt to make any such
assignment without such consent shall be null and void. Subject to the
preceding sentence, this Agreement will be binding upon, inure


                                      80



to the benefit of and be enforceable by the parties and their respective
successors and assigns.

     9.9. Submission to Jurisdiction; Waivers. Each of the parties to this
Agreement irrevocably agrees that any legal action or proceeding with respect
to this Agreement or for recognition and enforcement of any judgment in respect
hereof brought by any other party hereto or its successors or assigns may be
brought and determined in the Chancery Court of the State of Delaware, and each
party hereby irrevocably submits with regard to any such action or proceeding
for itself and in respect to its property, generally and unconditionally, to
the nonexclusive jurisdiction of the aforesaid court. Each party hereby
irrevocably waives, and agrees not to assert, by way of motion, as a defense,
counterclaim or otherwise, in any action or proceeding with respect to this
Agreement, (a) any claim that it is not personally subject to the jurisdiction
of the above-named court for any reason other than the failure to lawfully
serve process, (b) that it or its property is exempt or immune from
jurisdiction of any such court or from any legal process commenced in such
court (whether through service of notice, attachment prior to judgment,
attachment in aid of execution of judgment, execution of judgment or
otherwise), (c) to the fullest extent permitted by applicable law, that (i) the
suit, action or proceeding in any such court is brought in an inconvenient
forum, (ii) the venue of such suit, action or proceeding is improper and (iii)
this Agreement, or the subject matter hereof, may not be enforced in or by such
court and (d) any right to a trial by jury.

     9.10. Enforcement. The parties agree that irreparable damage would occur
in the event that any of the provisions of this Agreement were not performed in
accordance with their specific terms. It is accordingly hereby agreed that the
parties shall be entitled to specific performance of the terms hereof, this
being in addition to any other remedy to which they are entitled at law or in
equity.


                                      81



     9.11. Definitions. As used in this Agreement:

          (a)  "Adjustment Factor" means (i) 4.0 or (ii) such other number as
               shall be determined mutually by the Board of Directors of iXL,
               Scient and Holdco, respectively, upon the advice and
               recommendation of the respective independent financial advisors
               for iXL, Scient and Holdco (taking into account, among other
               things, the market capitalization of iXL and Scient), which
               determination shall be made not later than the second Business
               Day immediately preceding the date on which the Joint Proxy
               Statement/Prospectus is first disseminated to holders of iXL
               Common Stock and Scient Common Stock or, if applicable, not
               later than the second Business Day immediately preceding the
               date on which the latest supplement to the Joint Proxy
               Statement/Prospectus is first disseminated to holders of iXL
               Common Stock and Scient Common Stock.

          (b)  "Affiliate" shall have the meaning given to such term in Rule
               12b-2 under the Exchange Act.

          (c)  "Audit" means any claim, audit, action, suit, proceeding,
               investigation, assessment or other examination relating to Taxes
               by any Tax Authority or any judicial or administrative
               proceedings relating to Taxes.

          (d)  "beneficial ownership" or "beneficially own" shall have the
               meaning under Section 13(d) of the Exchange Act and the rules
               and regulations thereunder.

          (e)  "Benefit Plans" means, with respect to any Person, each employee
               benefit plan, program, arrangement and contract (including,
               without limitation, any "employee benefit plan," as defined in
               Section 3(3) of the Employee Retirement Income Security Act of
               1974, as amended ("ERISA") and any bonus, deferred compensation,
               stock bonus, stock purchase, restricted stock, stock option,
               employment, termination, stay agreement or bonus, change in
               control and severance plan, program, arrangement and contract)
               in effect on the date of this Agreement or disclosed on the
               Scient Disclosure Schedule or the iXL Disclosure Schedule, as
               the case may be, to which such Person or its Subsidiary is a
               party, which is maintained or contributed to by such Person, or
               with respect to which such Person could incur material liability
               under Sections 4069, 4201 or 4212(c) of ERISA.

          (f)  "Board of Directors" means the Board of Directors of any
               specified Person and any committees thereof.


                                      82



          (g)  "Business Day" means any day on which banks are not required or
               authorized to close in the City of New York.

          (h)  "known" or "knowledge" means, with respect to any party, the
               knowledge of such party's executive officers after reasonable
               inquiry.

          (i)  "Intellectual Property" means trademarks, service marks, brand
               names, certification marks, trade dress and other indications of
               origin, the goodwill associated with the foregoing and
               registrations in any jurisdiction of, and applications in any
               jurisdiction to register, the foregoing, including any
               extension, modification or renewal of any such registration or
               application; inventions, discoveries and ideas, whether
               patentable or not, in any jurisdiction; patents, applications
               for patents (including, without limitation, divisions,
               continuations, continuations in part and renewal applications),
               and any renewals, extensions or reissues thereof, in any
               jurisdiction; nonpublic information, trade secrets and
               confidential information and rights in any jurisdiction to limit
               the use or disclosure thereof by any Person; writings and other
               works, whether copyrightable or not, in any jurisdiction; and
               registrations or applications for registration of copyrights in
               any jurisdiction, and any renewals or extensions thereof; any
               similar intellectual property or proprietary rights.

          (j)  "Material Adverse Effect" means, with respect to any entity any
               material adverse effect on (i) the business, assets (including
               cash), financial performance, condition (financial or
               otherwise), or results of operations of such entity and its
               Subsidiaries taken as a whole, other than any event, change,
               circumstance or effect relating (x) to the economy or financial
               markets in general, or (y) in general to the industries in which
               such entity operates and not specifically relating to (or having
               the effect of specifically relating to or having a materially
               disproportionate effect (relative to most other industry
               participants) on) such entity, or (z) to the actions taken by
               the transition and succession team to the extent and in the
               manner specified in Section 6.2(b), or (ii) the ability of such
               entity to consummate the transactions contemplated by this
               Agreement.

          (k)  "the other party" means, with respect to Scient, iXL and means,
               with respect to iXL, Scient.

          (l)  "Person" means an individual, corporation, limited liability
               entity, partnership, association, trust, unincorporated
               organization, other entity or group (as defined in the Exchange
               Act).


                                      83



          (m)  "Stockholders Meeting" shall mean, with respect to iXL, the iXL
               Stockholders Meeting, and with respect to Scient, the Scient
               Stockholders Meeting.

          (n)  "Subsidiary" when used with respect to any Person means any
               corporation or other organization, whether incorporated or
               unincorporated, not less than a majority of the securities or
               other equity or ownership or beneficial interests of which
               having by their terms ordinary voting power to elect a majority
               of the Board of Directors or others performing similar functions
               with respect to such corporation or other organization is
               directly or indirectly owned or controlled by such party or by
               any one or more of its Subsidiaries, or by such party and one or
               more of its Subsidiaries.

          (o)  "Tax" (and, with correlative meaning, "Taxes") means any
               federal, state, local or foreign income, gross receipts,
               property, sales, use, license, excise, franchise, employment,
               payroll, withholding, alternative or add on minimum, ad valorem,
               transfer or excise tax, or any other tax, custom, import, duty,
               governmental fee or other like assessment or charge of any kind
               whatsoever, together with any interest penalty addition to tax
               or additional amount, imposed by any Governmental Entity or any
               obligation to pay Taxes imposed on any person for which a party
               to this Agreement is liable as a result of any indemnification
               provision or other contractual obligation or as a result of
               being or having been before the Effective Time a member of an
               affiliated, consolidated, combined, or unitary group.

          (p)  "Tax Authority" means any Governmental Entity vested with
               authority to levy Taxes.

          (q)  "Tax Return" means any return, report or similar statement
               required to be filed with respect to any Tax (including any
               attached schedules), including, without limitation, any
               information return, claim for refund, amended return or
               declaration of estimated Tax.

          (r)  "Third Party" means (i) with respect to iXL, any Person other
               than iXL or any of its Subsidiaries and (ii) with respect to
               Scient, any Person other than Scient or any of its Subsidiaries.

     9.12. Performance and Obligations. Whenever this Agreement requires any
Subsidiary of iXL or Scient to take any action, such requirement shall be
deemed to include an undertaking on the part of iXL (with respect to action by
a Subsidiary of iXL) and Scient (with respect to action by a Subsidiary of
Scient) and a guarantee by iXL (with respect to action by a Subsidiary of iXL)
and a guarantee by Scient (with respect to action by a Subsidiary of Scient) of
the full and punctual performance thereof. Whenever, from and after the
Effective Time, this Agreement requires the surviving corporation in the


                                      84



Scient Merger or the surviving corporation in the iXL Merger, as the case may
be, to take any action, such requirement shall be deemed to include an
undertaking on the part of Holdco to cause such relevant surviving corporation
to take such action and a guarantee by Holdco of the performance thereof.


                                      85



     IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement
to be duly executed and delivered by its respective officers thereunto duly
authorized, all on the date first written above.


                                        iXL ENTERPRISES, INC.


                                        By: /s/ Michael J. Casey
                                           ------------------------------
                                           Name:  Michael J. Casey
                                           Title: Senior Vice President and
                                                  Chief Financial Officer


                                        SCIENT CORPORATION


                                        By: /s/ Robert M. Howe
                                           ------------------------------
                                           Name:  Robert M. Howe
                                           Title: Chairman and Chief Executive
                                                  Officer


                                        INDIA-SIERRA HOLDINGS, INC.


                                        By: /s/ Michael J. Casey
                                           ------------------------------
                                           Name:  Michael J. Casey
                                           Title: Senior Vice President and
                                                  Chief Financial Officer


                                        INDIA MERGER SUB, INC.


                                        By: /s/ U. Bertram Ellis, Jr.
                                           ------------------------------
                                           Name:  U. Bertram Ellis, Jr.
                                           Title: President


                                      86



                                        SIERRA MERGER SUB, INC.


                                        By: /s/ Robert M. Howe
                                           ------------------------------
                                           Name:  Robert M. Howe
                                           Title: Chairman and Chief Executive
                                                  Officer


                                      87