Microsoft has incredible CI/CD tooling -- check out Visual Studio App Center, Azure App Insights, HockeyApp -- and many enterprise customers use this along with VSTS. However, many companies will never use VSTS, especially non-Microsoft-stack companies so making a big deal about how Microsoft's CI/CD tools work for non-Microsoft projects hosted at places like GitHub or any other hosting provider that supports the issuing of webhooks on checkin/merge events (eg: BitBucket, GitLab, Kiln, etc).

Did you realize that your Java/Android Studio project in GitHub could be connected to App Center such that for every source check-in the project is built, unit tested (code-level), UI-tested on physical hardware (Xamarin Test Cloud), and if all tests pass the build is pushed to beta testers via HockeyApp which also captures reams of telemetry and debugging information? App Center can even be set up to automatically push the app all the way to Google Play automatically when you merge down to your release branch.

Ditto iOS apps written with Swift in Xcode.

If you think Microsoft doesn't have massive amounts of CI/CD tooling that is agnostic to language and platform you should check it out.

https://www.visualstudio.com/app-center/