EXHIBIT 99.1


Press Release
CAIS Internet, Inc. Announces New CEO

WASHINGTON--(BUSINESS WIRE)--March 19, 2001--CAIS Internet, Inc. (NASDAQ:CAIS -
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news) today announced the hiring of Michael Lee as its new President and Chief
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Executive Officer. Mr. Lee will also join CAIS' Board of Directors.

"Over the past decade Michael Lee has established himself as an industry leader
in the field of data communications. His broad experience in operations,
marketing and technology in our industry makes him uniquely qualified to guide
CAIS successfully through current market conditions," said William Caldwell,
CAIS' outgoing CEO, who will remain with the Company as Vice Chairman of the
Board of Directors.

As previously announced, CAIS is undertaking a strategic review of its business
lines, including a detailed analysis of capital deployment and profitability by
business segment, and is developing alternative operating and financial
strategies based on this review. In his new capacity, Mr. Lee will oversee this
effort, effective immediately.

Mr. Lee has more than 12 years of experience in the high technology and Internet
industries. Most recently, he was Chief Business Development Officer at
TelePacific Communications ("TPAC"), a Los Angeles-based next generation
integrated communications provider ("ICP") of converged voice and data
services to businesses in the Western United States.

In that capacity, Mr. Lee was responsible for all corporate and business
development efforts, including strategic partnerships and mergers and
acquisitions. Mr. Lee also developed TelePacific's technology plan and network
strategy, including the integration of broadband voice and data services, which
led to the company being voted most innovative ICP in year 2000 by NetWorld-
InterOp.

Mr. Lee also founded DigitalVelocity(TM), a Los Angeles-based Internet Service
Provider that provides superior connectivity to multiple backbone carriers, that
was merged successfully with TelePacific in 1999. Prior to founding
DigitalVelocity(TM), Mr. Lee was a principal at CERFnet, one of the original
commercial ISPs, in 1994. After CERFnet was acquired by TCG and TCG was acquired
by AT&T, Mr. Lee served as National Director of Internet Sales for AT&T CERFnet.

"Michael Lee, an extremely talented individual, comes to CAIS with significant
experience in operating and implementing new strategies for Internet
companies," said Ulysses G. Auger, II, Chairman of the Board of Directors. "We
are very excited that he will be leading our team."

CAIS also announced today that John Saer, an Executive of Kohlberg Kravis
Roberts & Company, will join the Board of Directors while Ulysses G. Auger, Sr.
will resign from the

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Board. Prior to joining Kohlberg Kravis Roberts & Co. in 2001, Mr. Saer was the
Chief Financial Officer of KSL Recreation Corporation, a KKR sponsored company
organized in 1992 as a management buildup.

About CAIS Internet

CAIS Internet, Inc. has been delivering business class solutions since 1993 and
understands as businesses grow, so do communication needs. As the Internet Age
continues to move at a rapid pace, CAIS identifies and serves market segments
that need reliable broadband access and content services that have not been
offered by other providers. By anticipating demands for Internet access, and
quickly responding, CAIS has built a reputation as a pioneer of broadband
solutions for its business customers.

CAIS offers business class broadband solutions for small to medium-sized
businesses that combine state-of-the-art technology with customer support,
online content and interactive services. CAIS also provides comprehensive
building-centric broadband systems for hotels and apartments that include an
integrated package of software, adaptable technology, scalable systems and
content services.

CAIS was one of the original Tier 1 Internet Service Providers to connect to MAE
East, and was one of the first companies in the country to offer DSL services,
the latest in high-speed Internet access technology. CAIS maintains a close
proximity to MAE East, and operate a Cisco-Powered, nationwide clear-channel
OC12 network. CAIS currently peers with public and private partners, as well as
at national exchange points MAE East, MAE East ATM, MAE West and AADS. As part
of its commitment to technology, CAIS has developed a fully redundant network
that provides an enhanced and fault-tolerant infrastructure.

This press release contains forward-looking statements under the federal
securities law. These statements are based on current expectations, estimates
and projections about the industry and markets, management's beliefs and
assumptions. Forward-looking statements are not guarantees of future performance
and involve certain risks and uncertainties, which may cause actual results,
performance or achievements of the company to be materially different from the
results or plans expressed or implied by such statements.

Contact:

  CAIS Internet
  Christina Macro, 703/247-6285
  c.macro@cais.com
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