NetScout Customers Attend 5th Annual User Conference in Record Numbers.

Educational Sessions Led by nGenius Solution Experts and Customers Focus on Leveraging the nGenius Solution as Part of an Application Fabric Performance Management Strategy

WESTFORD, Mass. -- NetScout Systems, Inc. (NASDAQ: NTCT), a leading provider of network and application performance management solutions, today announced record attendance for its NetScout User Forum conference, held last week.

NetScout's network engineering, operations and IT management users from enterprises, service providers and, government agencies converged at the 2006 conference to gain insight from their peers and NetScout's top engineering talent. During the conference, user forum members from around the world shared best practices and met with NetScout executives and engineers to discuss the most pressing trends impacting the performance of their business-critical applications and networks.

The theme of the conference, "Conquering the Chaos: Real Performance in a Virtual World," centered on the complex challenges which the many existing and emerging forms of virtualization utilized in today's application delivery infrastructures impose on corporate, service provider and government networks. Session formats included hands-on labs, demos, lectures, panels and roundtable discussions.

Additional Conference Highlights

* Michael Szabados, NetScout's senior vice president of product operations, presented the kick-off keynote on "Application Fabric Performance Management," detailing NetScout's solution architecture and strategy for reducing MTTR (mean time to repair) for network-based business services and applications in the face of the increasing operational chaos driven by virtualization.

* A second keynote was delivered by Jean-Pierre Garbani, vice president of Computing Infrastructures and Security at Forrester Research, Inc. Garbani addressed "IT Operations: The Next Five Years," in which he examined trends in IT infrastructures, applications, and organizations, and identified how operations management products, technologies and processes must evolve in order to achieve and maintain a strategic role within the organizations they serve.

* More than 40 educational sessions were offered by NetScout experts and experienced nGenius System users to look in depth at a wide range of topics, including the realities and challenges of application monitoring within n-tier/SOA, the automated problem detection capabilities of nGenius Analytics, the powerful combination of flow and packet recording functionality within the recently introduced nGenius Application Fabric Monitor, best practices for embracing change, managing the performance of MPLS in converged networks, troubleshooting VoIP deployments, and many more.

* NetScout's training and customer support organizations led hands-on lab training sessions and best-practices workshops.

"The annual NetScout User Forum conference has evolved into the seminal vehicle for our customer base and R&D teams to share ideas on performance management of business-critical applications and discuss the challenges ahead for all of us," said Michael Szabados. "Not only does this annual exchange give us the chance to interact with and learn from our customers, but it gives our customers the chance to communicate with each other as peers, furthering the mission of maximizing network and application performance efficiency in the face of an increasingly dynamic and virtualized infrastructure."

About the NetScout User Forum

The NetScout User Forum is a company-sponsored group that focuses on the best use of NetScout's performance management products worldwide. It assists NetScout users with maximizing the benefits of their nGenius Performance Management System deployments to manage the performance and costs of their mission-critical applications and networks. The Forum is free for all current users of NetScout products, and offers discussion groups, educational seminars and technical briefs, as well as Web-based exchange of information and events. NetScout User Forum membership has grown to more than 1,400 members, representing more than 700 organizations worldwide.

About NetScout Systems

NetScout Systems, Inc. (NASDAQ: NTCT) is a market leader and pioneer of integrated application and network performance management products and solutions that help IT organizations assure critical business services across the enterprise. More than 3000 leading companies and government organizations worldwide have deployed NetScout's nGenius[R] Performance Management System to increase their return on infrastructure investments by optimizing the performance of networks and applications according to business priorities. NetScout is headquartered in Westford, Massachusetts and has offices worldwide. Further information is available at http://www.netscout.com.

NetScout and the NetScout logo, nGenius, and Quantiva are registered trademarks of NetScout Systems, Inc. The CDM logo, MasterCare, Progressive Analytics and the MasterCare logo, are trademarks of NetScout Systems, Inc. Other brands, product names and trademarks are property of their respective owners. NetScout reserves the right, at its sole discretion, to make changes at any time in its technical information and specifications, and service and support programs.