NEW YORK -- Former Nokia CEO Stephen Elop is leaving Microsoft Corp. as part of the technology company's move to realign its senior leadership team.

His exit comes about a year after Microsoft bought the cellphone and services division of Nokia for about $7.5 billion. He has been serving as the company's executive vice-president of devices and services.

In an email to employees Wednesday, Microsoft said it is making the changes to help reinvent the company's productivity and business processes, build an intelligent cloud platform that will power any application on any device and create more personal computing.

The company said Kirill Tatarinov and Eric Rudder will also leave the company after a transition period.

Unrelated to the engineering restructuring changes, the company said Chief Insights Officer Mark Penn has decided to pursue another venture and will be leaving the company in September.