Silverlight Light Up The WEB

Silverlight is a cross-browser, cross-platform plug-in for delivering the next generation of media experiences and rich interactive applications (RIAs) for the Web.

Limelight Networks
"High-performance is integral to our success and ongoing leadership as a content delivery network. With Microsoft Silverlight we're supporting a platform that will revolutionize the capabilities and experiences we can provide, using scalable and recognized technologies already deployed by our customers."