http://blogs.technet.com/b/bettertogether/archive/2011/05/15/exchange-2010-sp1-hosting-part4-multi-tenant-setup.aspxI started this blog series by giving 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 Descriptionen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)