Apogee Networks and CacheFlow to Integrate Billing and Content Delivery Technologies; Service Providers Can Accelerate Time-to-market for New Enhanced Service Offerings.

Business Editors/Technology Writers

ROCHELLE PARK, N.J. and SUNNYVALE, Calif.--(BUSINESS WIRE)--May 31, 2000

Apogee Networks, Inc., the industry's most innovative provider of content and usage-based billing solutions, and CacheFlow Inc. (Nasdaq:CFLO), a leading provider of Internet caching appliances and content management services, today announced that the two companies will jointly develop integrated solutions for application, network and Internet service providers.

The CacheFlow and Apogee integration will enable service providers to offer advanced services such as content distribution and voice and video streaming to their enterprise and e-commerce customers, creating new lines of high-margin business.

Through the companies' joint development initiatives, Apogee Networks' NetCountant(TM)/SP real time mediation, rating and service creation billing platform will become fully interoperable with CacheFlow's family of Internet caching appliances. The capability of deploying new content-based services in real-time will allow service providers to realize new revenue opportunities, introduce new products and enter new markets. For example, the joint solution will support usage-based pricing models, thereby overcoming the industry's limitations of flat rate pricing for content services.

"Our partnership with Apogee Networks adds a critical layer of intelligence to our content management and delivery solution," said Patrick Harr, VP of Marketing at CacheFlow. "Together, we're enabling service providers to bring new billable IP services to market with greater speed and higher profitability."

"We are extremely pleased and excited about creating this partnership with CacheFlow," said Pablo Tapia, founder and CEO of Apogee Networks, Inc. "It's a major development and a unique opportunity to bring innovative solutions to both companies' customers."

CacheFlow Content Delivery Solutions

CacheFlow's award-winning Internet caching appliances intelligently manage and swiftly deliver all forms of Web content, including streaming media. Service providers deploy the appliances within their subscriber networks and data center locations to enhance customer satisfaction and maximize network resources. The CacheFlow platform serves as a basis for enhanced service offerings, such as Web site acceleration, content distribution and multimedia broadcasts. CacheFlow's integration with Apogee's billing technology allows service providers to reach larger sets of customers, creating economies of scale and higher profitability.

Apogee Billing and Rating Solutions

NetCountant/SP provides Internet Providers (ISPs, ASPs, CSPs, NSPs, Carriers, etc.) with full end-to-end rating and billing platforms. Apogee Networks' innovative solutions provide order entry/registration, product creation, customer care, billing, account management and product provisioning. ContentFlow Server is Apogee Networks' unique platform solution for IP Content usage-based billing. The ContentFlow Server is a highly flexible and scalable system enabling Content Service Providers to grow with their customer base without having to make large capital expenditures.

About Apogee Networks, Inc.

Headquartered in Rochelle Park, New Jersey, Apogee Networks, Inc. is the recognized leader in developing advanced Content Rating and Billing platforms for IP Service Providers, Content Distributors, and Global 2000 Enterprises. Apogee Networks' Enterprise NetCountant product recently won Networld+Interop's Best-Of-Show Award. For more information, call 888/Apogeee (276-4333) or email us at [e-mail] or visit the company Web site at www.apogeenetworks.com.

About CacheFlow, Inc.

CacheFlow is a leading provider of Internet caching appliances that accelerate and optimize the flow appliances that accelerate and optimize the flow of information over the Internet. CacheFlow solutions -- containing the CacheOS(TM) operating system -- boost the performance of e-commerce web sites, enhance the productivity of Internet users and reduce overall network costs for Internet service providers and enterprises. In addition, CacheFlow Internet caching appliances are designed to provide better network security and more up-to-date content than traditional caching solutions. Based in Sunnyvale, California, CacheFlow can be contacted via telephone at 408/220-2250 or email at [e-mail] or visit the Web site at www.cacheflow.com.

The statements contained in this press release that are not purely historical are forward-looking statements, including statements regarding CacheFlow's expectations, beliefs, intentions or strategies regarding the future. All forward-looking statements included in this press release are based upon information available to CacheFlow as of the date hereof, and CacheFlow assumes no obligation to update any such forward-looking statements. Forward-looking statements involve risks and uncertainties, which could cause actual results to differ materially from those projected. These and other risks relating to CacheFlow's business are set forth in CacheFlow's Form S-1, as amended and declared effective by the Securities and Exchange Commission on November 18, 1999, the Form 10-Q for the period ended January 31, 2000, and other reports filed from time to time with the Securities and Exchange Commission.

CacheFlow is a registered trademark of CacheFlow Inc. in the U.S. and worldwide. All other company and product names are used for identification purposes only and may be trademarks of their respective owners.