VitalStream Partners with thePlatform to Offer Comprehensive Digital Media Publishing & Delivery Solution

VitalStream MediaConsole MPS Provides Advanced Audio and Video Management for Secure Delivery Over its Global Network

Press Release, April 12, 2005

IRVINE, CA and SEATTLE, WA. VitalStream, Inc. (OTC Bulletin Board: VSTH), a streaming media solutions and global content delivery network (CDN) provider, announced an OEM partnership with thePlatform, a leading provider of digital media publishing tools. VitalStream will provide customers with a comprehensive publishing solution, enhanced by thePlatform Media Publishing System (MPS), to manage, control, publish and track secure digital audio and video that is sent over VitalStream's advanced content delivery network.

VitalStream will offer this solution to its customers as MediaConsole? MPS. MediaConsole MPS will be available in three configurations, enabling customers to more easily and effectively aggregate, manage, and publish their digital media content:

MediaConsole MPS Commerce. This package will enable VitalStream customers to create storefronts for secure digital media transactions. This turnkey commerce engine allows organizations to sell content through flexible pricing plans, including pay-per-view and time-based subscriptions, on a monthly, weekly, or daily basis. Optionally, content can be protected with Windows Media DRM 10, a proven platform for protecting high-quality audio and video.
MediaConsole MPS Portal. This package will enable VitalStream customers to create personalized and searchable end-user audio and video portals using point-and-click interfaces. New portals can be configured and customized instantly, and a rich set of off-the-shelf tools enables content owners to add, preview and approve new media with just a few clicks.
MediaConsole MPS Basic. This package will offer powerful media management and reporting capabilities.
Additionally, this new solution can be extended by VitalStream, its channel partners and developers with additional features and custom commands, including integration into existing business systems, such as billing and e-commerce, using a sophisticated software development kit (MPS SDK).

"VitalStream's advanced streaming media toolset and content delivery network, combined with our comprehensive media publishing solution will provide organizations with the most efficient all-in-one digital publishing and delivery solution," said Ian Blaine, CEO at thePlatform.

"thePlatform's media management and publishing technology enhances VitalStream's rich toolset with advanced commerce and DRM functionality," said Philip N. Kaplan, president and COO at VitalStream. "MediaConsole MPS gives VitalStream customers additional media management and publishing tools to securely sell and deliver their streaming media over VitalStream's reliable content delivery network."

Available immediately from VitalStream's direct sales team, the MediaConsole MPS solution will be demonstrated for the first time during NAB 2005, Las Vegas, NV at VitalStream's Booth #SL1023 and at thePlatform's booth #SL3322. To learn more about the solution, please visit www.vitalstream.com.

About VitalStream, Inc.

VitalStream, Inc., a wholly-owned subsidiary of VitalStream Holdings, Inc. (OTC: VSTH), is a global provider of integrated content delivery services that enable businesses to broadcast digital media and communications to worldwide audiences via the Internet. The company provides complete solutions, including audio and video streaming, live event broadcasting, media asset management, integrated Web hosting and consulting services, that seamlessly integrate with today's leading streaming media technologies. To ensure a worldwide reach, VitalStream engineered its award-winning content delivery network certified for quality delivery in the United States, Europe and Asia. For more information, visit www.vitalstream.com.

About thePlatform

Headquartered in Seattle, thePlatform For Media, Inc. is an industry-leading provider of digital media publishing solutions. The company's flagship product, thePlatform Media Publishing System (MPS), is a comprehensive solution for media, entertainment and enterprise customers. With thePlatform MPS, customers can publish digital media to any device. Custom feature enhancements and seamless systems integration are a simple matter using thePlatform's the Web services MPS-SDK. For more information visit www.theplatform.com.

Forward Looking Statements

This news release contains forward-looking statements made in reliance upon the safe harbor provisions of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Actual results may differ materially from those indicated by these statements as a result of various important factors including, but not limited to, the possibility that VitalStream's new product offerings based upon or incorporating its partners' proprietary technology may not predictably be accepted by its customers, and other factors that are discussed in "Factors That May Affect Future Results" and elsewhere in the Annual Report on Form 10-K of VitalStream Holdings, Inc. and other documents periodically filed by VitalStream Holdings, Inc. with the SEC. VitalStream Holdings, Inc. undertakes no obligation and expressly disclaims any obligation to update or revise such forward-looking statements under any circumstances.

VitalStream is a registered trademark of VitalStream Inc. All other trademarks are property of their respective holders.