Part 8 which has final review
Before Domino servers 38 including 3 BES servers (15 sites) after Exchange users(presuming he means servers here) 105 (14 sites)
I can’t stress enough how much more bandwidth you will need compared to a Domino infrastructure.
Microsoft Sales team promises a lot that they can’t deliver.
If you use Microsoft Engineering team to implement what the Microsoft Sales team has sold you, you will get proof positive on the previous point. Even the Engineering team will admit that they’ve oversold you.