At the end of last year, Microsoft announced that it would abandon its own rendering engine, EdgeHTML, and switch to the new Chromium-based Edge browser, which is expected to log into Windows 10, Windows 7, and macOS platforms in the first half of this year. Microsoft is actively using Chromium code and the Blink rendering engine to create its own browser, but the look and feel of the new Edge will be different from Chrome.
In fact, Microsoft was one of Chromium's top contributors long before Microsoft announced its Chromium-based Edge browser. Microsoft Edge browser engineers are active on the Chromium community on Twitter.
Then foreign media Windows Lastest queried on Chromium Gerrit and found that Microsoft had submitted multiple Commits for Chromium. For example, a Microsoft engineer fixed an issue with initializing the same variable previously declared on DirectX. Another submission from Microsoft engineers is related to Web testing related to WPT upstream local time. Microsoft also helped the community improve support for Chromium for Windows 10 on ARM.