Microsoft has even tried this approach in-house. Late last year, the company set up mobile device support for 98,000 employees and 80,000 contractors, according to a technical session at TechEd given by Microsoft engineers Arun Ramakrishnan and Marc Hurley. The engineers expect that over time, more than 125,000 of these workers will register their own personal mobile devices.
The vast majority of these devices were either Windows Phones or Windows RT devices, though a few Microsoft employees and contractors confessed to using Apple iOS devices. They didn't build in support for Android devices because very few Microsoft workers admitted to using them, at least for work purposes.