> EdgeHTML is a proprietary layout engine developed for Edge. It is a fork of Trident that has removed all legacy code of older versions of Internet Explorer and rewritten the majority of its source code with web standards and interoperability with other modern browsers in mind.
https://en.wikipedia.org/wiki/Microsoft_Edge#EdgeHTML
> EdgeHTML is a proprietary layout engine developed for Edge. It is a fork of Trident that has removed all legacy code of older versions of Internet Explorer and rewritten the majority of its source code with web standards and interoperability with other modern browsers in mind.