Newly Deployed Infrastructure Features Numerous Industry Firsts, Delivers Breakthrough Levels of Performance, Scalability, Reliability and Flexibility for Global Delivery of Adobe Flash Player Video Media Content

TEMPE, Ariz. – Oct. 02, 2007 - Limelight Networks, Inc. (Nasdaq: LLNW) today announced the latest version of its global Adobe(R) Flash(R) Media content delivery infrastructure and services. Built on Adobe Flash Media Server and Limelight's global content delivery network (CDN), Limelight's Flash Media Server CDN infrastructure incorporates numerous technical advances and industry firsts, including:

• Adobe Flash Media Server Live Streaming is now generally available to customers without restrictions. Limelight is the first CDN to move its Flash Live Streaming service based on Adobe Flash Media Server from limited release, or "beta" stage, to generally available production service. Live streaming for Adobe Flash Player video combines the workflow between Adobe's industry-leading cross-platform development tools combined with the ubiquitous Adobe Flash(R) Player providing the ability to offer live media services such as concerts, live television, breaking news events and Internet radio. Supported by Limelight's true edge-origin architecture, global deployment of Adobe Flash Media Server edge servers, and global network infrastructure, Limelight's Flash Live Streaming service offers the highest level of performance and lowest level of packet loss in the industry.
• Limelight is the first CDN in the industry to implement Adobe Flash Media Server in true edge-origin CDN architecture. Edge-origin architecture separates edge server functions from origin server functions, incorporates support for tiered library management, improves network performance and scalability, increases storage efficiency, and provides architectural and implementation flexibility to customers. Edge-origin architecture contrasts with typical Adobe Flash Media Server implementations where each server acts as a separate origin connected to local storage arrays.
• Limelight is the first CDN to deploy Adobe Flash Media Server edge servers at every CDN location worldwide. This deployment provides Limelight's customers with true edge delivery on a global scale from the same network footprint as other formats, such as HTTP and Windows Media. Delivery from every global edge location throughout North America, Europe, and Asia assures customers the best possible performance, scalability, and reliability of on-demand and live Flash media streaming.
• Limelight is the first and only CDN to support standard web servers as origin servers for Adobe Flash Media Server content. Customers can now use any standard web server to host on-demand Flash streaming content in conjunction with Limelight Adobe Flash Media Server edge delivery. Customer origin servers connect to the Limelight network over the Internet via HTTP, just as other customer origin servers, such as those serving HTTP and Windows Media content, do. No special software is required -- any standard HTTP server is supported. Limelight will continue to offer Limelight origin services for Adobe Flash Media Server customers, but customers will now have more choice and greater content management flexibility.

"Limelight is an established provider of distributed Internet delivery of video and many of our customers rely on their global content delivery network to deploy Flash Player compatible video," said Bill Rusitzky, director for global media alliances at Adobe. "Adobe and Limelight share the vision of bringing high-quality seamless video to the Internet and we're excited about the innovation Limelight consistently delivers to the streaming marketplace."

"Adobe Flash technology is a leading format among our media savvy customers and partners," said David Hatfield, senior vice president of worldwide sales and marketing at Limelight Networks. "With the ubiquity of Adobe Flash Player combined with enhanced scalability and performance in the Adobe Flash Media Server, we are fully committed to partnering with Adobe to deliver highly reliable, broadcast quality consumer experiences over the Internet."

"As a customer of both Adobe and Limelight, I am thrilled to see this level of collaboration," said Jeremy Allaire, CEO, Brightcove. "The performance and scalability of this combination gives us great confidence that we have the best infrastructure to support our global audience of consumers, publishers and on-line video advertisers."

About Limelight Networks

Limelight Networks is a high-performance content delivery network for digital media, providing massively scalable, global delivery solutions for on-demand and live Internet distribution of video, music, games and social media. Limelight Networks' infrastructure is optimized for the large object sizes, large content libraries, and large audiences associated with compelling rich media content. Limelight is the content delivery network of choice for more than 850 of the world's top media companies, including Akimbo, Amazon Unbox(TM), Belo Interactive, Brightcove, "BuyMusic" @ Buy.com, DreamWorks, LLC, Facebook, FOXNews.com, IFILM, ITV Play, MSNBC.com, MySpace, NC Interactive, Valve and Xbox Live. For more information, visit http://www.llnw.com.

Safe Harbor Act Disclaimer: All forward-looking statements contained in this release are made within the meaning of and pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements other than statements of historical facts, including but not limited to statements concerning the company's ability to meet customers' requirements and ensure high-performance content delivery to its customers, and all other statements concerning the plans, intentions, expectations, projections, hopes, beliefs, objectives, goals and strategies of management. Forward-looking statements are not guarantees of future performance or events and are subject to a number of known and unknown risks, uncertainties and other factors that could cause actual results to differ materially from those expressed, projected or implied by such forward-looking statements. Accordingly, there can be no assurance that the results expressed, projected or implied by any forward-looking statements will be achieved, and readers are cautioned not to place undue reliance on any forward-looking statements. The forward-looking statements in this press release speak only as of the date hereof and are based on the current plans, goals, objectives, strategies, intentions, expectations and assumptions of, and the information currently available to, management. The Company assumes no duty or obligation to update or revise any forward-looking statements for any reason, whether as the result of changes in expectations, new information, future events, conditions or circumstances or otherwise.