We will see the features of the Edge Canary version later in the Beta version and finally in the Fixed versions of the browser. The Secure DNS is its implementation DNS-over-HTTPS Microsoft, a technology for encrypting DNS traffic.
The domain name system (DNS) is used for various purposes, such as translating domain names into IP addresses. Every request submitted to the browser uses DNS.
Unencrypted DNS searches mean that ISPs and others can view, record, or even manage these requests. Thus DNS encryption is considered necessary.
Microsoft has provided support for encrypted DNS in Windows 10 at the beginning of the month but this feature is only available to Insiders. But soon we are expected to see the new feature in the stable versions of Windows 10.
On the other hand, Mozilla and Google have already implemented support for DNS-Over-HTTPS in their browsers. So Microsoft, which follows the development of Google Chromium, added this feature to the new Edge.
To set the Secure DNS on the Edge:
Open the internal edge: // settings / privacy
At the bottom in the Security section of the page you will see the setting “Use secure DNS to specify how to lookup the network address for websites ”that can be activated or deactivated. It should be enabled by default and the function should be set to "use current service provider".
If you want to choose a service provider click on "choose a service provider" to designate a provider that supports secure DNS. You will be presented with a list of providers to choose from. Just click on the blank field and select one of the four providers available: Quad9, Cloudflare, CleanBrowsing or Google.