Nadella's first day as CEO is today, February 4. Current CEO Steve Ballmer is out, effective immediately.
The choice of Nadella is somewhat surprising, and in other ways, not.
Nadella -- believed to have been, all along, one of a small handful of alleged internal candidates for the Microsoft CEO job
-- has been at the company for 22 years. As of 2011, he ran Microsoft's lucrative server and tools businesses. His official title, as of the July 2013 "One Microsoft" reorg, became Executive Vice President of Cloud and Enterprise.
Given Microsoft is remaking itself as a devices and services company, it's not too crazy that Microsoft's selection committee would choose a "cloud guy" to be the next CEO. The fact that the majority of Microsoft's revenues and profits come from enterprise software also make Nadella -- who also heads up the company's enterprise software businesses -- a seeming shoo-in.