Requirements Management with Visual Studio Team System White Paper
Just released the Requirements Management with Visual Studio Team System White Paper.
The document does a great job of walking through several of the partners and the strengths of their offerings. Can be downloaded from:
http://www.microsoft.com/downloads/details.aspx?FamilyId=EEF7BB41-C686-4C9F-990B-F78ACE01C191&displaylang=en
