Here's the latest installment of "as the Microsoft revolving door turns."

On the "in" side, Microsoft has a new head of North American Sales & Marketing, as announced by the company on March 26. Judson Althoff is the newest Microsoft Corporate Vice President, reporting directly to Microsoft Chief Operating Officer Kevin Turner.
Althoff previously was Senior Vice President of Worldwide Alliances and Channels and Embedded Sales at Oracle Corp. While at Oracle for 14 years, he also served as vice president for worldwide alliances, and vice president of global platform and distribution sales. Before Oracle, he worked in a business development manager and district sales manager at EMC Corp.
Althoff is replacing Robert Youngjohns, the previous head of North American Sales & Marketing. Youngjohns, who had been with Microsoft since 2007, left the company in the fall of 2012 to join HP as the Senior Vice President and General Manager of the Autonomy/Information Management (IM) business unit.
On the "out" side, 13-year Microsoft veteran Erik Meijer has left the company (as I discovered via a thread on Microsoft's Channel 9 site). The former Microsoft Partner Architect and Iconoclast (his latest title at Microsoft, according to his LinkedIn profile) is now listed solely as Professor of Cloud Programming at TU Delft (a title he has held since 2011).
Meijer held a lot of different roles at Microsoft, including head of the cloud programmability team. He's known for his work in functional programming (especially Haskell), programming language design, C#, LINQ, Volta, and the Reactive programming framework (Rx) for .Net.