Bert Van Der Zwan to Drive Growth of On-Demand Collaboration Applications in EMEA

SANTA CLARA, Calif., February 17, 2005—WebEx Communications, Inc, (NASDAQ: WEBX), the leading provider of on-demand collaborative business applications, today announced the appointment of Bert van der Zwan as vice president EMEA.

Van der Zwan has over 20 years of senior management experience in the European technology market, including eight years at data and voice networking company, 3Com Corporation. At 3Com, Van der Zwan was managing director of Mid and North Europe and was responsible for all direct and channel sales activities. Most recently, Van der Zwan was managing director of Action Engine, a joint venture between Microsoft and Intel, and a leading application platform provider for mobile devices. He was responsible for all aspects of the business in EMEA and played a key role in building platform relationships with mobile operators, relevant channels and the region’s large hardware vendors.

“I am very excited to be joining the world’s software-as-a-service (SaaS) leader just as Europe businesses are waking up to the benefits of on-demand software,” said Van der Zwan. “The costs savings, rapid implementation, expanded reach and seamless integration capabilities of on-demand adoptions have fuelled amazing market growth. IDC recently named WebEx the number one software-as-a-service provider*, so it is in a very strong position to capitalise on this demand”.

“Van der Zwan’s impressive experience in the strategic applications platform market will further strengthen our position in EMEA,” said Subrah Iyar, chairman and CEO of WebEx. “Appointing senior management of this calibre serves to further reinforce our leadership in the market”.

WebEx Communications provides on-demand collaboration applications to individuals, small businesses and enterprise organizations. WebEx applications combine both synchronous and asynchronous collaboration capabilities and allow businesses to leverage the web as an efficient channel for interaction with customers, partners and co-workers. These on-demand applications enhance high-touch business processes, such as sales and training, with efficient web-touch interactions.

All WebEx applications are built on the MediaTone platform and are supported by the WebEx MediaTone Network, a global network specifically designed for on-demand applications. The WebEx MediaTone Network uses a switch-based architecture to provide reliable, consistent application performance worldwide. MediaTone APIs make it easy for developers to build specialized applications that leverage the network’s real-time collaboration capabilities or add these capabilities into third party applications.

Van der Zwan is based in Amsterdam at the company’s European headquarters.

About WebEx Communications
WebEx Communications, Inc. is the global leader of on-demand applications for collaborative business on the web. WebEx applications are used across the enterprise in sales, support, training, marketing, engineering and product design. WebEx delivers its range of applications over the WebEx MediaTone Network, a global network specifically designed for secure delivery of on-demand applications. WebEx Communications is based in Santa Clara, California and has regional headquarters in Europe, Asia and Australia. Please call toll free 877-509-3239 or visit www.webex.com for more information.

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*Worldwide Software On-Demand Vendor Analysis: Top 25 On-Demand Providers Take Shape (IDC#33879, September 2005). The opinions, analysis, or predictions contained in the publication regarding WebEx and other on-demand vendors are the opinions of IDC alone and do not represent opinions, analysis or predictions of WebEx Communications, Inc. or its management. WebEx Communications, Inc. does not by this press release imply its endorsement or adoption of such opinions, analysis or predictions.