Tatarinov headed Microsoft Business Solutions, the corporate home for Dynamics, although he left Microsoft changed Dynamics to become a product line, not a separate part of the organization. His LinkedIn page says that MBS had $2 billion in revenue at the end of his tenure and the Citrix release reports he doubled revenue while in the Dynamics job. Tatarinov joined Microsoft in July 2002. He came to the software company from BMC Software, where he held executive positions from July 1994 through June 2002. I believe it's fair to say Tatarinov was not the channel's favorite person and he had a hard act to follow when he succeeded Doug Burgum. The Citrix job became available when Mark Templeton left the CEO's seat in October. The company's executive chairman, Robert Calderoni, was interim CEO during the well, interim.