Microsoft Edge added support for DNS-over-HTTPS (DoH) in version 86, but the prepopulated list/configuration pane was removed after users began reporting performance issues. Microsoft Edge has now enabled a list of suggested DoH providers in the latest Microsoft Edge Canary and Dev builds. DoH allows DNS resolution to be performed over an encrypted HTTPS connection rather than through plain text DNS lookups. It will allow users to bypass censorship, prevent spoofing attacks, and increase privacy as their requests cannot be as easily monitored.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-edge-tests-fix-for-dns-over-https-performance-issues/