Press Release

ON24 Adds More than 300 New Customers in 2007 and Achieves Major Milestones

Leading Provider of Webcasting and Rich Media Marketing Solutions Launches Beijing offices and Adds Second Datacenter to Support Global Growth

As the only company in the webcasting industry to implement a second datacenter, ON24's second data center will further enable the company to maintain redundant facilities to achieve a vision of "five nines"(99.999%) network uptime. The second datacenter, combined with the launch of the company's offices in Beijing, China in September, will enable ON24 to manage the increased demand from global customers for innovative webcasting and rich media marketing solutions for their global communication needs. This extends ON24's vision to provide "follow-the-sun" support, training and services to organizations worldwide.

"Global companies have global communications needs," stated Sharat Sharan, President and CEO of ON24, Inc. "With the launch of our second datacenter this month and our new offices in Beijing, ON24 now has the global footprint and infrastructure to provide our customers with the support and services they need whenever and wherever they are in the world."

Innovative Technology and Solutions Contribute to ON24's Industry Leadership
In addition to launching the second datacenter, ON24 achieved several business milestones this year:

• In April 2007, ON24 launched Insight24, the industry's first B2B rich media directory aggregating and syndicating over 5,000 podcasts, webcasts, videos and online demos in over 30 business and technology categories from over 160 companies. Insight24 enables users to research, evaluate and compare business and technology solutions and vendors, while extending the life and ROI of existing rich media for content providers.
• In May 2007, ON24 powered the software industry's first 24-hour live streaming video event for Business Objects. Titled "24 Hours of Light," the streaming video event consisted of eight one-hour segments running three times during a 24-hour period. The live video webcast reached customers, partners, and prospects in Asia-Pacific, Europe and North America.
• In September 2007, ON24 streamed the company's 50,000th webcast, with over 12.5 million unique viewers attending a webcast powered by ON24 since 2002. During this 5 year time period, ON24 has streamed over 40,000 audio and 10,000 video webcasts.
• In October 2007, ON24 completed the implementation of a second datacenter, with each datacenter enjoying redundant giagabit-ether scale backbone connections. ON24 located the datacenter outside the Bay Area for disaster recovery purposes.

The company continues to experience strong growth worldwide with the addition of over 300 new customers in government, life sciences, financial services, publishing and technology; including Business Objects, Elsevier - Oncology Stat, GE Healthcare, Reed Exhibitions, and The Generations Network.

About ON24, Inc.
ON24 Inc. is the global leader of webcasting and rich media marketing solutions. ON24's solutions provide companies a full range of applications and services to meet corporate and marketing initiatives such as lead generation, conferences and events, product launches, continuing professional education, internal communications, and executive announcements.

More than 600 global organizations in publishing, technology, life sciences, government, and financial services rely on ON24, including Business Objects, Cardinal Health, Cisco Systems, CMP Media, Credit Suisse, Department of Education, GE Healthcare, Hewlett-Packard, IBM, Motorola, National Science Foundation, and Samsung. ON24 is headquartered in San Francisco, with offices in Washington, D.C., New York, London and Beijing.

“A World of Webcasting Solutions. One Webcasting Provider”™ - is a trademark of ON24.

“Insight24™” - your B2B rich media network for information, intelligence and insight - is a trademark of ON24, Inc.