Limelight Networks Delivers Amazon Unbox™

TEMPE, AZ – September 14, 2006 – Limelight Networks, Inc., the world’s leading content delivery network for digital media, today announced it is the content delivery network for Amazon Unbox™, a new high-quality digital video download service from Amazon.com (Nasdaq:AMZN). Utilizing Limelight’s global, high-performance network, Amazon Unbox offers consumers thousands of DVD-quality TV shows, movies, and other videos from around the world, all delivered via the Internet to PCs, Media Center PCs, and a family of compatible portable media players. Unbox customers can choose from Amazon.com’s vast video library including thousands of television shows, movies and other content from more than 30 studio and network partners. Unbox offers double the video quality of the leading commercial Internet video services, delivering content encoded at 2,500 kilobits per second.

“We selected Limelight Networks’ high-performance content delivery network for delivery of the Unbox service because it was built from the ground up for digital media,” said Bill Carr, Amazon.com’s vice president of digital media. “Leveraging the full range of Limelight’s capabilities, we can reliably and instantaneously deliver these high-quality video files to our customers, saving them a trip to the video store.”

The entire library of Unbox video titles is stored in Limelight’s global network, for fast, immediate delivery of every title, from the most popular to the most obscure. Limelight is also providing the industry’s leading IP-address geolocation technology, enabling Amazon.com and its content partners to ensure that each delivery is made in complete compliance with applicable copyrights.

“The new Unbox online video download service is sure to be a big hit with consumers looking for a fast, convenient way to watch their favorite TV shows and movies on their PCs and portable devices. Breakthrough services like Amazon Unbox demonstrate the power of the Internet to bring consumers the specific content they want, when and where they want it,” said Bill Rinehart, chief executive officer at Limelight Networks. “As the delivery network for Unbox, we are committed to ensuring that every video download to every Unbox customer is fast, high-quality, and always available.”