Hence, for such websites, Microsoft did keep a way to load Internet Explorer dependent websites in a compatibility mode in Microsoft Edge. Though there will be hardly any users missing the ancient web browser, the websites configured to run best on Internet Explorer didn’t just cease out of existence overnight.
Windows 11 is probably the first version of Windows that does not explicitly include Internet Explorer. Unable to open some really old websites on Edge in Windows 11? Try using the Internet Explorer mode in Microsoft Edge.