Devenuti served as CIO and other roles before taking command of Microsoft’s managed services business in 2003 when he has named senior vice president of services and IT. The company signed its first services deal in 2005 with Energizer Holdings, taking over management of the company’s Windows desktops and operating systems and security features. Earlier this year Microsoft signed up insurance firm XL Capital as its second services customer.

It’s unclear how serious Microsoft is about entering the infrastructure services market, one typically dominated by large outsourcers and Microsoft industry partners such as EDS Corp and IBM Corp. On the one hand, these engagements could provide fresh revenue for the company, or they could also provide a good opportunity to sell Microsoft products to managed services clients.

Devenuti, who Microsoft says is leaving to have more family time and look into other opportunities, will stay on until the end of the year. A new services head is expected to be named in the next month.