By James Frew at MakeUseOf.com…
Windows 10 was a huge success after it launched in 2015. As of March 2017, it was running on over a quarter of Desktop computers worldwide, only trailing Windows 7, which was released six years prior. Microsoft appeared to have listened to feedback about Windows 8 and sought to mix the best of Windows 7 and 8 while pushing the OS into the future.
Source: Privacy and Windows 10: Your Guide to Windows Telemetry