Pflug did not describe how the new IE11 mode will work within Edge when the latter wraps up its based-on-Chromium transformation. But no matter how Microsoft does it, its process won’t be a first.

To run test in IE mode in Edge, admins will need to install Edge, Selenium 4 or later language bindings, and the Internet Explorer Driver version 4.0 or later. The driver needs to be set up with ...

At the Build 2019 conference, Microsoft officially announced the feature, but it was still not working at the time. ... Enabling Internet Explorer Mode in Microsoft Edge Dev.

IE mode in Microsoft Edge is supported through at least 2029 to give web developers eight years to modernize legacy apps and eventually remove the need for IE mode, Microsoft said last year.

As far as IE mode goes, this feature shows that Microsoft is still haunted by the legacy of a browser it first launched in 1995 and replaced by the first version of Edge in 2015.