Pros
Nothing good seemed to ever happen at Microsoft IT. Since IT is considered a service division that supports the profit making business units. Most buildings are not even on the main corporate campus. The Pros is that you get easier parking. Not a big deal.
Cons
I worked at Microsoft IT for 5 years. It started well with a good manager and ended with 2 bad managers. Just like other positions at Microsoft, managers matter a lot. I talked to other engineers at product groups like Windows and Office. Their culture seemed to be more engineering and technical focused than playing games and politics. There is politics at every workplace. Microsoft IT seemed to get it the most. My review was heavily affected by if other engineers liked my personality rather than liked my engineering contribution. Who decided that? The ranking system dictated by the managers.