How to Disable Connected User Experiences and Telemetry
The Connected User Experiences and Telemetry, originally called Diagnostics Tracking or DiagTracK, is a service in Windows that runs automatically and sends data to Microsoft. This service manages transmission and of diagnostic and usage information to "improve the experience and quality of the Windows platform." As far as we can tell, this service can safely be disabled to disable the telemetry and even speed up Windows. Here's how.