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F5 Extends Worldwide Market Share Lead in Application Delivery Controllers

Leading industry analyst firm reports that F5 has demonstrated significant growth and increased its market share lead

F5 Networks, Inc. (NASDAQ: FFIV), the global leader in Application Delivery Networking, today announced that it continues to grow and expand the company's number one position in the application delivery controller (ADC) market. In a recently published Gartner report, "Market Share: Application Acceleration Equipment, Worldwide1, F5 is leading the ADC sector with 33.9 percent market share. Over the quarter, F5 increased its total market share by 2 percent and opened up a 7.3 percent lead. F5 also continues to dominate the advanced platform ADC subsegment, improving on a 59.4 percent share in 4Q01 to capture a 61.7 percent of the market in 1Q06.

F5's ADC offering combines BIG-IP high-performance hardware platforms with BIG-IP v9 software for a comprehensive, advanced solution that delivers industry-leading application security, optimization, and availability. TMOS - F5's intelligent, modular and scalable architecture - brings key differentiators to the market, including the only full IP application proxy, iRules programming language, TCP Express, and iControl application integration interface.

"Our continued success in the ADC market is a tribute to the power of the TMOS architecture," said Erik Giesa, VP of Product Management and Marketing at F5. "Customers respond to consolidated, granular application delivery solutions, which we provide on a unified platform. Another significant contributor to BIG-IP's market traction is F5's DevCentral, which helps speed customer innovation by offering unique support for building intelligent integration between an organization's Application, Network and Security teams."

For related research on the Application Delivery market, read Gartner's Magic Quadrant for Application Delivery Products, 2005

1 Market Share: Application Acceleration Equipment Worldwide, 1Q06 Table 2-1, Joe Skorupa May 2006, Gartner, Inc.

About F5 Networks

F5 Networks is the global leader in Application Delivery Networking. F5 provides solutions that make applications secure, fast and available for everyone, helping organizations get the most out of their investment. By adding intelligence and manageability into the network to offload applications, F5 optimizes applications and allows them to work faster and consume fewer resources. F5's extensible architecture intelligently integrates application optimization, protects the application and the network, and delivers application reliability-all on one universal platform. Over 10,000 organizations and service providers worldwide trust F5 to keep their applications running. The company is headquartered in Seattle, Washington with offices worldwide. For more information, go to

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