Windows® Azure is a cloud services operating system that serves as the development, service hosting and service management environment for the Azure Services Platform. Windows Azure provides developers with on-demand compute and storage to host, scale, and manage Web applications on the Internet through Microsoft® data centers.
Windows Azure is currently in Community Technology Preview. Commercial availability for Windows Azure will likely be at the end of calendar year 2009.
For more info about Azure….visit videos at:
http://www.microsoft.com/azure/videos.mspx