Who will take over for Satya Nadella’s now former role at Microsoft, helming the Server and Enterprise Group? It’s longtime Sofite Scott Guthrie, a respected technologist.

TechCrunch confirmed with Microsoft that Guthrie will take the position on an interim basis, maintaining his current job title of corporate vice president. In the Microsoft hierarchy, corporate vice presidents rest below executive vice presidents, who report to the CEO.

So, Nadella moved up a notch, and Guthrie did as well, provided that his interim status becomes permanent.

Who is Guthrie? Good question. Long-time Microsoft watcher Mary Jo Foley published a good summation in her report on his ascension:

Guthrie, known for wearing red polo shirts during his public Microsoft speaking appearances, moved from being the Corporate Vice President of the .Net platform in the Developer Division, to head the Azure Application Platform team in the Business Platform Division in May 2011. He has been a major advocate for developers and has made a priority integrating open-source tools and technologies into the Microsoft stack.

Red shirt he may be, but Guthrie is hardly a freshman. More as we have it.