Under Ballmer, Microsoft had a brief identity crisis, trying to be a vertically integrated company like Apple. It is clear that Satya Nadella is taking Microsoft the other way to become a horizontally-integrated company like Google (http://stratechery.com/2013/understanding-google/)by open-sourcing .Net platform, to support competing platforms like Linux, releasing Office and Outlook on all mobile platforms (Windows, iOS, Android), focusing on cloud services, and deprioritizing Windows.
Under Ballmer, Microsoft had a brief identity crisis, trying to be a vertically integrated company like Apple. It is clear that Satya Nadella is taking Microsoft the other way to become a horizontally-integrated company like Google (http://stratechery.com/2013/understanding-google/)by open-sourcing .Net platform, to support competing platforms like Linux, releasing Office and Outlook on all mobile platforms (Windows, iOS, Android), focusing on cloud services, and deprioritizing Windows.