CERTIFICATION

I, Wijeyaraj Mahadeva, certify that:

     1. I have  reviewed  this  Quarterly  Report  on  Form  10-Q  of  Cognizant
        Technology Solutions Corporation;

     2. Based on my knowledge, this report does not contain any untrue statement
        of  a material fact or omit to state a material  fact  necessary to make
        the  statements made,  in light  of the  circumstances  under which such
        statements were made, not misleading with respect to the period  covered
        by this report;

     3. Based on my knowledge,  the financial  statements,  and other  financial
        information included  in  this report,  fairly  present in all  material
        respects  the financial condition, results of  operations and cash flows
        of the registrant as of, and for, the periods presented in this report;

     4. The  registrant's  other  certifying  officer and I are  responsible for
        establishing  and maintaining  disclosure controls  and  procedures  (as
        defined  in  Exchange  Act  Rules  13a-15(e)  and  15d-15(e))  for   the
        registrant and have:

               a)   Designed such disclosure controls and procedures,  or caused
                    such disclosure controls and procedures to be designed under
                    our  supervision,   to  ensure  that  material   information
                    relating  to  the  registrant,  including  its  consolidated
                    subsidiaries,  is made  known to us by others  within  those
                    entities,  particularly  during  the  period  in which  this
                    report is being prepared;

               b)   [PARAGRAPH  OMITTED  IN  ACCORDANCE   WITH  SEC   TRANSITION
                    INSTRUCTIONS CONTAINED IN SEC RELEASE 34-47986];

               c)   Evaluated the effectiveness of the  registrant's  disclosure
                    controls  and  procedures  and  presented in this report our
                    conclusions   about  the  effectiveness  of  the  disclosure
                    controls and procedures, as of the end of the period covered
                    by this report based on such evaluation; and

               d)   Disclosed  in this  report any  change in  the  registrant's
                    internal  control over  financial  reporting  that  occurred
                    during the  registrant's  most recent  fiscal  quarter  (the
                    registrant's  fourth fiscal quarter in the case of an annual
                    report)  that  has  materially  affected,  or is  reasonably
                    likely  to  materially  affect,  the  registrant's  internal
                    control over financial reporting; and

     5. The registrant's other certifying officer and I have disclosed, based on
        our   most  recent   evaluation  of   internal  control  over  financial
        reporting,  to the registrant's  auditors and the audit committee of the
        registrant's  board of  directors (or persons  performing the equivalent
        function):

               a)   All significant  deficiencies and material weaknesses in the
                    design or  operation  of  internal  control  over  financial
                    reporting  which are reasonably  likely to adversely  affect
                    the registrant's ability to record,  process,  summarize and
                    report financial information; and

               b)   Any fraud, whether or not material, that involves management
                    or  other  employees  who  have a  significant  role  in the
                    registrant's internal control over financial reporting.


                                       /s/ Wijeyaraj Mahadeva
                                       ------------------------
Dated: August 13, 2003                 Wijeyaraj Mahadeva
                                       Chairman of the Board and Chief Executive
                                       Officer (Principal Executive Officer)