http://blogs.technet.com/b/bettertogether/archive/2011/03/17/exchange-2010-sp1-hosting-part-3-hosting-setup.aspxI gave an overview about Exchange 2010 SP1 Hosting in this post Exchange 2010 SP1 Hosting – Part 1 “Overview” and then I went through Hosting Description in this post Exchange 2010 SP1 Hosting – Part -2 “Hosting Description”en-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)