Sources speculate that his exit could be driven by his frequent clashes with other senior executives at Microsoft, but the company’s release states his departure as a mutual decision. Julie-Larson Green will take on software and hardware engineering responsibilities of Sinofsky, while Tami Reller will take over the business of Windows 8. Reller is also the Chief Financial Officer and the Chief Marketing Officer at Microsoft. Sinofsky’s exit from Microsoft has come as a surprise to many, especially at a time when rumors of him taking over from Steve Ballmer as the CEO were doing the rounds. However, analysts agree that Sinofsky’s inability to coordinate with other Microsoft teams could have let do this move. A clear case of this was during the making of Microsoft Surface, which required collaboration across hardware, software, Office, Xbox, Bing, Skype, and other teams.
