Riverbed Demonstrates WDS Market Leadership at CMP's Interop Las Vegas.

Showcases Award-Winning Steelhead Appliances; WDS Expert to Speak at Conference; Partner Pavilion Highlights the Business Benefits of Technology

SAN FRANCISCO -- Riverbed Technology, Inc. (NASDAQ: RVBD), the performance leader in wide-area data services (WDS), is showcasing its award-winning Steelhead[R] WDS appliances at CMP Media's Interop Las Vegas. In addition, Riverbed[R] Vice President of Product Management John Martin will participate in a conference panel discussion on optimizing the network for branch efficiency. Lastly, Riverbed is hosting a partner pavilion in its booth in which leading software and hardware vendors will demonstrate the value of their solutions when coupled with Riverbed's WDS solutions. Partners participating in the Riverbed Technology Alliance (RTA) Pavilion are:

* Acopia Networks is the leader in high-performance, intelligent file virtualization. Solutions based on Acopia's FreedomFabric[TM] network operating system software help customers manage the growth, complexity, and cost of unstructured, globally distributed, file-based information. By providing automatic, policy-driven, data migration, tiering, load balancing, snapshots, and replication across multi-vendor storage environments, Acopia helps IT executives to reduce management overhead and accelerate business workflow. For further information about Acopia's products and services, please visit its Website at www.acopia.com.

* LeftHand Networks: LeftHand Networks pioneered IP-based storage area networks (SAN) in 2001. SANs built using LeftHand's SAN/iQ[R] software are uniquely able to distribute and protect data across a cluster of industry-standard storage servers. The company's patented architecture increases data availability, allows users to start small and grow the SAN seamlessly, and simplifies management. The LeftHand SAN is ideal for server consolidation and virtualization projects, Microsoft Application environments, and disaster recovery solutions. For more information, contact LeftHand at [e-mail].

* RadWare (NASDAQ:RDWR), the global leader in integrated application delivery solutions, assures the full availability, maximum performance, and complete security of business-critical applications for more than 5,000 enterprises and carriers worldwide. With APSolute, Radware's comprehensive and award-winning suite of intelligent front end, access, and security products, companies in every industry can drive business productivity, improve profitability, and reduce IT operating and infrastructure costs by making their networks "business smart". For more information, please visit www.radware.com.

* Voyence is the leading provider of configuration and change management solutions that automate critical change, compliance and activation processes. The company's solution, VoyenceControl, helps organizations drive out operational costs, increase availability, improve security, and demonstrate regulatory compliance. VoyenceControl is the only configuration and change management solution based on a multi-tiered architecture that can effectively manage tens of thousands of devices across heterogeneous infrastructure. For more information please visit www.voyence.com.

Come to the Riverbed Booth and WIN $1000!

Riverbed is offering to attendees several promotions throughout the show. Riverbed will award on the show floor two PlayStation 3's and a $1,000 grand prize. Attendees should stop by the Riverbed booth during expo hours for details.

Where:                                                           <  <


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Booth 559                                                        <  <


Interop Las Vegas                                                <  <


Mandalay Bay Convention Center                                   <  <


Las Vegas, NV                                                    <  <


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When:                                                            <  <


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Booth Hours                                                      <  <


May 22: 10:00 A.M. - 5:00 P.M.                                   <  <


May 23: 10:00 A.M. - 5:00 P.M.                                   <  <


May 24: 10:00 A.M. - 3:00 P.M.                                   <  <


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"Optimizing the Network for Branch Efficiency" Panel Discussion  <  <


May 22, 2007                                                     <  <


11:30 A.M. - 12:30 P.M.                                          <  <

About Riverbed's Steelhead Appliances

Riverbed's WDS solutions enable organizations with more than one office to overcome a host of severe problems, including poor application performance and insufficient bandwidth at remote sites. By speeding the performance of applications between distributed sites by five to 50 times and in some cases up to 100 times between enterprise datacenters and remote offices, Riverbed's award-winning Steelhead WDS appliances enable companies to consolidate IT, improve backup and replication processes to ensure data integrity, and improve staff productivity and collaboration. Steelhead appliances 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, view Riverbed's demo: www.riverbed.com/pr/jack.

Forward Looking Statements

This press release contains forward-looking statements, including statements relating to the expected demand for Riverbed's products and services, 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-Q filed with the SEC on April 27, 2007. 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.

About Riverbed

Riverbed Technology is the performance leader in wide-area data services (WDS) solutions for companies worldwide. By enabling application performance over the wide area network (WAN) that is orders of magnitude faster than what users experience today, Riverbed is changing the way people work, and enabling a distributed workforce that can collaborate as if they were local. Additional information about Riverbed (Nasdaq: RVBD) is available at www.riverbed.com.

Riverbed Technology, Riverbed, Steelhead, RiOS, Interceptor, and the Riverbed logo are trademarks or registered trademarks of Riverbed Technology, Inc. All other trademarks used or mentioned herein belong to their respective owners.