That division is also taking responsibility for some of Microsoft's virtual reality and augmented reality development and products. Redmond, Washington-based Microsoft has sought to sell those technologies to cloud customers as new ways to oversee workers, manage equipment and offer training in corporate environments. Myerson leaves after 21 years, and almost three years in what some have called the hardest job at Microsoft -- trying to build a device business after the company exited the phone handset business, while charting the future of Windows in a world that is moving away from the client-computing model that it led. Prior to those roles, Myerson ran Windows Phone and the Exchange email server.