Microsoft is retiring Internet Explorer 11 from some Windows 10 versions and replacing it with the Chromium-based Microsoft Edge. Microsoft Edge has Internet Explorer mode ( IE mode ) built in, so you can access legacy Internet Explorer-based websites and applications straight from Microsoft Edge, says Microsoft Edge Partner Group Program Manager Sean Lyndersay. Microsoft said last year that Microsoft Teams would no longer support IE 11 starting with November 30, 2020. The company also added that it would ultimately end all support for Internet Explorer across Microsoft 365 apps and services on August 17, 2021.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-to-retire-internet-explorer-on-some-windows-10-versions/