Keynote Systems and ExtraHop Networks Partner to Deliver Real-Time, Rapidly Deployed, End-to-End Application Performance Management

January 12, 2011

ExtraHop Provides the Inside-Looking-Out View and Keynote Provides the Outside-Looking-In View of the Datacenter

SAN MATEO, CA and SEATTLE, WA – JANUARY 12, 2011 – Keynote Systems (NASDAQ: KEYN), the global leader in Internet and mobile cloud monitoring and ExtraHop Networks, a leading technology provider of network- and application-performance management (APM) solutions, today announced an enterprise-grade, easy-to-deploy, joint solution that provides companies with both synthetic and real-time transaction analysis from the end user across the entire datacenter. The joint solution gives companies a complete picture of the performance of their business-critical applications in real time and is made possible by Keynote's Open APM™ strategy. Keynote Open APM allows customers to integrate trusted Keynote external website measurements with the internal APM solution of their choice. The Keynote and ExtraHop solutions are exceptionally complementary, as Keynote provides the outside-looking-in view of critical web applications, while ExtraHop provides the agentless inside-looking-out view of the datacenter.

Working together as a combined solution, Keynote detects high-latency conditions or errors affecting end-user experience and ExtraHop provides the critical information needed about back-end components that are running slowly or failing. The joint solution from Keynote and ExtraHop is unique because it combines proactive external monitoring with passive datacenter monitoring for end-to-end problem detection and root-cause analysis in a plug-and-play package. Companies now can monitor their network and application performance in real time without relying on agent-based, expensive, hard-to-deploy solutions.

"For businesses looking for complete APM, the ExtraHop and Keynote solution delivers the most value with the least complexity," said Jesse Rothstein, CEO and co-founder of ExtraHop Networks. "Competing solutions aren't as lightweight and easy to deploy, nor do they provide a real-time, complete front-end and back-end view of the IT environment. With the widespread adoption of new technologies such as server virtualization, network-attached storage, and cloud computing, organizations require an application performance management solution that is rapidly deployed, scalable, and suitable for dynamic environments."

Keynote's active external end-user experience monitoring, combined with ExtraHop's unique troubleshooting capabilities and application-level visibility, proactively warn of small problems before they become major disasters. This functionality is particularly important in e-commerce with seasonal traffic spikes that quickly can cause exhausted connections in back-end order processing databases or slow application response times that can be caused by storage latency.

"Keynote monitors web applications 24/7, regardless of when users are online, allowing for the most up-to-date view into the end-user experience of critical e-business applications," said Vik Chaudhary, vice president of product management and corporate development at Keynote. "The network-centric view of application performance offered by ExtraHop adds passive real-time insight into the components delivering these web applications, such as application servers, databases, and storage. The unique value ExtraHop brings, combined with Keynote monitoring, results in a joint turn-key solution that provides a comprehensive view from end-user experience to root cause of performance-affecting problems. Keynote is proud to be helping the hottest Internet companies such as Groupon, Facebook, Skype and Zynga deliver peak performance and with our newest partner, ExtraHop, we look forward to helping the best of the best reach new heights in performance."

"End-to-end application performance management can be a huge challenge and burden for companies, but it doesn't need to be," said Jim Frey, research director, EMA. "The solution from ExtraHop and Keynote delivers the clear advantages of complete application performance management done right. It is light-weight, deploys rapidly, and is in real time—all of which are critical components to understanding and troubleshooting applications in today's highly distributed, increasingly virtualized infrastructures."

To learn more, please join our webinar on Thursday, February 3rd at 2 PM EST / 11 AM PST. Follow ExtraHop on Twitter at www.twitter.com/ExtraHop and Keynote on Twitter at www.twitter.com/KeynoteSystems and www.twitter.com/Keynote_Mobile.

About Keynote Systems

Keynote Systems (NASDAQ: "KEYN") is the global leader in Internet and mobile cloud monitoring. We provide companies with solutions for continuously improving the online experience. Founded in 1995, Keynote provides testing, monitoring and measurement products and services for any enterprise including online portals, e-commerce sites, B2B sites, mobile operators and mobile infrastructure providers. Keynote products and services help companies improve customer experience in four areas: Web performance, mobile quality, streaming and real user experience testing.

Known as The Mobile and Internet Performance Authority™, Keynote has a market-leading on-demand infrastructure of over 3,000 measurement computers and mobile devices in over 240 locations around the world. Keynote's 2,800 customers represent top Internet and mobile companies including American Express, AT&T, Disney, eBay, E*TRADE, Expedia, Google, Microsoft, SonyEricsson, T-Mobile and Vodafone.

Keynote Systems, Inc. is headquartered in San Mateo, California and can be reached at www.keynote.com or by phone in the U.S. at 1-800-KEYNOTE.

About ExtraHop Networks

ExtraHop Networks, Inc. was founded in early 2007 by Jesse Rothstein and Raja Mukerji, engineering veterans from F5 Networks and architects of the BIG-IP v9 product. The company's pioneering ExtraHop Application Delivery Assurance system is the industry's first completely passive network appliance that provides application-level visibility with no agents, configuration, or overhead. The privately held company is headquartered in Seattle, Washington, and funded by Madrona Venture Group and other private investors. For more information, visit www.extrahop.com.

Press Contact:

Rachel Pepple

ExtraHop Networks

206-453-2290

pr@extrahop.com