Business Process Management Software
From someone who is knee deep within the Business Process Management Software space daily (www.interfacing.com), I have a hard time understanding why Microsoft doesn't play a larger role within such a lucrative management industry. MS is still sitting on the success of Visio instead of investing in a more robust modeling/management solution will definitely hurt them in the long-run as companies slowly move away from desktop solutions. Microsoft does have BizTalk which is a powerful system centric workflow tool, however, they are truly lacking within the modeling, simulation, risk & human centric workflow (which are central to workflow).
Regards, Scott