Leading Analyst Firm Identifies Riverbed As Market Share Leader In Q4 2007

Riverbed™ Technology (Nasdaq: RVBD), the technology and market leader in wide-area data services (WDS), announced today that Gartner has identified the company in its recently announced report, "Market Share: Application Acceleration Equipment, Worldwide 4Q07 and 2007" as the WOC (WAN optimization controller) Advanced Platform worldwide market share leader for 4Q 2007 and CY 2007 based on revenue. According to Gartner’s market share report, Riverbed® sustained strong growth to maintain its lead with 29% share. This is the 6th quarter in a row that Riverbed has maintained the leadership position in the WOC Advanced Platform category.

"Acceleration is the cornerstone of our market, called "WOC Advanced Platform by Gartner and WDS by Riverbed," said Eric Wolford, senior vice president, marketing and business development at Riverbed. When customers come to Riverbed, they are looking for an easy-to-install and manage WDS solution that speeds application performance and data transfer download times for their distributed employees, including remote offices and mobile workers. Our belief that speed is the core requirement is supported by our continued market share leadership in the WOC Advanced Platform product category, and our over 4,000 customers worldwide."

In February 2008, Riverbed extended its technology and product lead with the announcement of the 5.0 version of the Riverbed Optimization System (RiOS™), which powers the Riverbed Steelhead product line. With RiOS 5.0, Riverbed is the first and only vendor to provide application-level protocol optimization for Microsoft Exchange 2000, 2003, and 2007. In addition, Riverbed has extended its lead in delivering solutions to enhance IT flexibility and capabilities with new scale, simplicity, and security features, including the RiOS Services Platform (RSP), an extensible data services platform that enables the delivery of virtualized edge services without the need to deploy additional physical servers at remote or branch offices. The RSP allows customers to deploy best-of-breed services from their choice of vendors on Steelhead appliances in a self-contained partition to minimize the hardware infrastructure footprint at the branch office. In a typical RSP-enabled deployment of Steelhead appliances, IT infrastructure at the remote site can often be reduced to an RSP-enabled Steelhead appliance and a router, reducing costs and minimizing IT overhead.
 
“While speed is the highly-valued anchor tenant in remote offices and a core requirement for customers in the WOC Advanced Platform category, there is demand for other services such as Web-proxy,  DNS/DHCP/IPAM, streaming video, unified threat management (UTM), virtual machines, and print, but it is fragmented among the array of other edge services desired.  By offering an open WDS platform, like RSP, Riverbed matches the customer need for acceleration with the best-of-breed services they require.” said Wolford.

1 Gartner, Inc., "Market Share: Application Acceleration Equipment, Worldwide, 4Q07 and 2007" by Joe Skorupa and Nhat Pham, March 2008

Steelhead Products
Riverbed's WDS solutions enable organizations of all sizes to overcome a host of severe problems, including poor application performance and insufficient bandwidth at remote sites. By speeding the performance of applications between data centers, remote offices, and mobile workers by five to 50 times and in some cases up to 100 times, Riverbed's award-winning Steelhead WDS products enable companies to consolidate IT, improve backup and replication processes to ensure data integrity, and improve staff productivity and collaboration. Steelhead products have been deployed in organizations ranging from the world's largest corporations with offices around the globe to small companies with a couple of sites that are just miles apart. To learn more, click here to view our demo.

About Riverbed
Riverbed Technology delivers performance for the globally connected enterprise. With Riverbed, enterprises can successfully and intelligently implement strategic initiatives such as virtualization, consolidation, cloud computing, and disaster recovery without fear of compromising performance. By giving enterprises the platform they need to understand, optimize and consolidate their IT, Riverbed helps enterprises to build a fast, fluid and dynamic IT architecture that aligns the business needs of the organization. Additional information about Riverbed (NASDAQ: RVBD) is available at www.riverbed.com.

Forward Looking Statements
This press release contains forward-looking statements, including statements relating to the expected demand for Riverbed's products and services, statements regarding performance results of Riverbed solutions that may suggest likely or certain outcomes, and statements relating to Riverbed's ability to meet the needs of distributed organizations. These forward-looking statements involve risks and uncertainties, as well as assumptions that, if they do not fully materialize or prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. The risks and uncertainties that could cause our results to differ materially from those expressed or implied by such forward-looking statements include our ability to react to trends and challenges in our business and the markets in which we operate; our ability to anticipate market needs or develop new or enhanced products to meet those needs; the adoption rate of our products; our ability to establish and maintain successful relationships with our distribution partners; our ability to compete in our industry; fluctuations in demand, sales cycles and prices for our products and services; shortages or price fluctuations in our supply chain; our ability to protect our intellectual property rights; general political, economic and market conditions and events; and other risks and uncertainties described more fully in our documents filed with or furnished to the Securities and Exchange Commission. More information about these and other risks that may impact Riverbed's business are set forth in our Form 10-K filed with the SEC on February 15, 2008. All forward-looking statements in this press release are based on information available to us as of the date hereof, and we assume no obligation to update these forward-looking statements. Any future product, feature or related specification that may be referenced in this release are for information purposes only and are not commitments to deliver any technology or enhancement. Riverbed reserves the right to modify future product plans at any time.

Riverbed and any Riverbed product or service name or logo used herein are trademarks of Riverbed Technology, Inc. All other trademarks used herein belong to their respective owners.