Just finished an 3 day touch down program on office 2007 system. This is my fourth such training after the sql server and visual studio training of 5 days each and the 3 day ascend program on win fx and vista OS.

With this release ms office is no longer a suite of personal productivity products but a completely integrated system including, products, servers, services and solutions for solving enterprise business problems.

Check out this section of microsoft site for office architects.
http://msdn.microsoft.com/architecture/solvenow/office/default.aspx