Killed by Microsoft
Contrary to Google, Microsoft often provide a migration path to another of their service covering the same usecases.<p>Examples:<p>Skype For Business => Teams.<p>Microsoft Edge => Chromium Edge.<p>Windows 10 IoT Core => It's not dead ???<p>Office Viewer => Web Based Office<p>Kinect => It's not dead ???<p>Microsoft Anti-Virus for Windows => Windows Defender<p>Come on, microsoft has big flaws but backward compat/keeping old product alive is where they are one of the best in the industry.