Earlier this year at its Build 2019 developer conference, Microsoft announced IE Mode for its upcoming Chromium-based version of Edge. Now, you can finally use it.
The feature allows you to open a webpage in an Internet Explorer tab within the Edge browser itself. You'll need to enable a flag called 'Enable IE Integration' first, and then when you have a page open, you can go to More tools -> Show this page using Internet Explorer to change the tab you're in.
It's worth noting that the flag was actually discovered a few weeks ago, but enabling it at the time would only launch IE as a separate application. Now, there's a new option in the dropdown list, so you can choose between Default, Disabled, IE Mode, and NeedIE.
IE Mode is already available in the Dev branch; however, you won't find it in Edge for Mac. This is because Internet Explorer isn't supported on Macs, so it was deemed unnecessary.
Another new feature added is a flag called 'Limit media autoplay', which will block certain sites from autoplaying video. If you want to check out the Edge Insider builds, you can find it here.