http://blogs.msdn.com/alainler/archive/2006/08/16/702229.aspxMy readers know my interest to the "Software as a Service" concept. Microsoft has just released a complete subsite on MSDN Architecture led by our friends Gianpaolo and Fred . Here's where you can find it: http://msdn.microsoft.com/architecture/saas/en-USCommunityServer 2.1 SP1 (Build: 61025.2)