Riverbed Expands Branch Office Strategy With Microsoft

SAN FRANCISCO, CA, May 11 (MARKET WIRE) --
Riverbed Technology (NASDAQ: RVBD), the IT infrastructure performance
company for networks, applications and storage, today announced that it
has forged a deeper relationship with Microsoft to provide enterprises
with distributed workers and offices the best possible performance for
their Microsoft-based applications and services and to simplify their IT
infrastructure. Today, customers are able to run Microsoft Windows Server
2003 and Windows Server 2008, including branch services such as Active
Directory, DNS/DHCP, Media Streaming and Print Services, on the Riverbed
Services Platform (RSP). As a natural next step, Riverbed(R) will enable
the deployment of Windows Server 2008 R2 on the RSP.

"The relationship between Riverbed and Microsoft continues to grow. We are
able to innovate and provide enterprises with solutions that accelerate
the performance of their Microsoft environments," said Julius Sinkevicius,
director Windows Server Marketing at Microsoft. "Having the support of
Riverbed is crucial to the success of our branch office strategy. We're
both committed to working jointly to provide our customers with a
comprehensive WAN optimization offering by joining complementary
solutions."

Microsoft introduced a feature, BranchCache, which is intended to improve
performance for Windows 7 users accessing file and Web applications hosted
on Windows Server 2008 R2 servers over the WAN. Riverbed enables the
deployment of Windows Server 2003 and Windows Server 2008 on Steelhead(R)
appliances with the RSP. Customers currently deploy Windows Server on the
RSP to consolidate services at the branch to further cut costs, including
Active Directory, DNS/DHCP, Media Streaming and Print Services. When
Windows Server 2008 R2 is released, it can be deployed on the RSP and the
BranchCache feature is a service that enterprises can use on the deployed
Windows Server.

"As enterprises move to Windows 7, they may find a place for BranchCache
on the Steelhead appliance," said Zeus Kerravala, senior vice president,
Yankee Group. "It is apparent that Riverbed has been working with
Microsoft on a broad vision and in-depth technology integration that will
benefit their joint customers. This strategy positions Riverbed to
continue to be a market and technology leader in the WAN optimization
market."

"We've worked closely with Microsoft on technology integration through the
POLP program and the integration of Windows Server on the RSP. Supporting
Microsoft's latest innovations is a natural next step in our
relationship," said John Martin, vice president of product management,
Riverbed. "By working with Microsoft we've been able to expand on our
core value to customers -- providing the best acceleration across the
broadest set of applications. In branch office environments the
combination of Riverbed and Microsoft will provide enterprises with a
comprehensive, optimized IT environment."

The RSP is an extensible virtualized data services platform that allows
customers to deploy best-of-breed edge services that formerly required
dedicated servers as virtual appliances. Customers can deploy these
virtual appliances directly on Steelhead products to further minimize the
hardware infrastructure footprint at the branch office, which reduces
costs in operational overhead.

Forward Looking Statements

This press release contains forward-looking statements, including
statements relating to the expected demand for Riverbed's products and
services, statements relating to future functionality of the Riverbed
Services Platform, 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 30, 2009. 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.

About Riverbed

Riverbed Technology is the IT infrastructure performance company. The
Riverbed family of wide area network (WAN) optimization solutions
liberates businesses from common IT constraints by increasing application
performance, enabling consolidation, and providing enterprise-wide network
and application visibility -- all while eliminating the need to increase
bandwidth, storage or servers. Thousands of companies with distributed
operations use Riverbed to make their IT infrastructure faster, less
expensive and more responsive. Additional information about Riverbed
(NASDAQ: RVBD) is available at www.riverbed.com.

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

MEDIA CONTACT
Kristalle Ward
Riverbed Technology
415-247-8140
Email Contact

INVESTOR RELATIONS CONTACT
Renee Lyall
Riverbed Technology
415-247-6353
Email Contact

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