Source: http://www.joystiq.com/2014/02/04/micro ... a-nadella/
From the article: "Microsoft announced Satya Nadella as its new CEO this morning. Nadella joined Microsoft in 1992, and is now upgrading from his previously-held position as Executive Vice President of the company's Cloud and Enterprise group. The new CEO is credited with bringing Microsoft's various services to the cloud."
Here is the first interview with him. That is quite some office they have there.