Using Codealike since Thursday, February 1, 2018. Last time used on Thursday, April 11, 2019.
Code Facts
You can use this to understand how much experience MS has with a given technology. It's based on the time using a file while Coding or Debugging, Building nor System time.
Behavior Facts
This sections shows how MS works in an overall perspective. It considers the time used for Coding, Debugging and Building.