Microsoft is coming up with ServeLight product to target Adobe’s Flash which is said to be installed 98% of personal computers. I believe it will be an interesting technology. If Microsoft can combine vector graphics of flash with the powerful .Net framwork then it should be a really valuable offering to the web development community.
Silverlight(formerly known as code name “WPF/E”) is a cross-browser, cross-platform plug-in for delivering the next generation of media experiences and rich interactive applications (RIAs) for the Web. Silverlight integrates with existing Web applications. Silverlight media capabilities include fast, cost-effective delivery of high-quality audio and video to all major browsers including Firefox, Safari and Internet Explorer running on the Mac or on Windows. By using Expression Studio and Visual Studio, designers and developers can collaborate more effectively using the skills they have today to light up the Web of tomorrow.
For more details click here