Frost & Sullivan Releases Latest Web Conferencing Market Report: WebEx Communications Increases to 67% Market Share

SAN JOSE, Calif., May 6, 2004 -- According to the annual web conferencing industry report published by research and consulting firm Frost & Sullivan, the market share of web conferencing services provider WebEx Communications (Nasdaq: WEBX) has climbed to a new high of 67%, more than four times greater than any other vendor. The April 2004 report, titled "World Web Conferencing Markets," includes details on the current market landscape and size, projected growth rates and market share by provider, and trends and new developments in the industry.

"WebEx's investment in its global MediaTone Network truly sets it apart from the rest of the pack," stated report author David Alexander, Frost & Sullivan industry analyst. "WebEx continues to be the driving force behind the successful web conferencing services market and its success proves WebEx's corporate mantra, 'web conferencing is a communications business'."

Other highlights from the Frost & Sullivan annual report include:

-- Web conferencing is penetrating non-technology sectors including retail, manufacturing and legal.

-- The factors driving growth include increased awareness, expanding availability, and growing convergence with audio and video conferencing technologies.

-- The growing number of telecommuters and expanding geographic disparity of businesses is expected to drive additional interest and adoption of web conferencing.

-- The increasing availability of broadband and growing awareness in international markets will expand opportunities for vendors.

For more information regarding the "World Web Conferencing Markets" report, contact Frost & Sullivan at http://www.frost.com .

WebEx manages a global network over which it delivers a range of web communications services including services for web conferencing, web-based support, remote training and online events. WebEx provides its services to corporations, technology companies and telecommunication providers worldwide. All of WebEx's services are built on the MediaTone(TM) communications platform and delivered through the WebEx MediaTone Network, the only global network specifically designed for web communications. MediaTone's unique information- switching technology allows the WebEx network to manage complex media types, deliver advanced communications functionality, and support a range devices and platforms.

About WebEx Communications, Inc.

WebEx Communications, Inc. is the world's leading provider of web communications services. WebEx services are used across the enterprise in sales, support, training, marketing, engineering and product design. With its unique information-switching technology, multimedia capabilities and standards-based APIs, MediaTone is the "dial tone" for web communications. WebEx Communications is based in San Jose, California and has regional headquarters in Europe and Asia. Please call toll free 877-509-3239 or visit http://www.webex.com for more information.

About Frost & Sullivan

Founded in 1961, Frost & Sullivan is recognized as a global leader in growth consulting. Frost & Sullivan Awards are presented to companies that demonstrate excellence in their industry, commending the diligence, commitment, and innovative business strategies required to advance in the global marketplace. Frost & Sullivan rigorously analyzes specific criteria to determine award recipients in a vast variety of market industries and landscapes. For further information, visit http://www.frost.com.

NOTE: WebEx and MediaTone are trademarks and/or registered trademarks of WebEx Communications, Inc.

The above referenced report was produced by Frost & Sullivan, an independent third party analyst that is not affiliated with WebEx Communications, Inc. The opinions, analysis, estimates or forecasts contained in the report regarding WebEx and the web conferencing industry are the opinions of the analyst alone and do not represent opinions, estimates, forecasts or predictions of WebEx Communications, Inc. or its management. WebEx Communications, Inc. does not by this press release imply its endorsement of or concurrence with such opinions, analysis, estimates or forecasts.

SOURCE WebEx Communications, Inc.

Web Site: http://www.webex.com