Support for the DNS-over-HTTPS protocol has landed this week in Windows Insiders, Microsoft's experimental version of Windows, where the company tests new features before making them broadly available.
Current Windows 10 Insiders Fast Ring distributions now include a DNS-over-HTTPS (DoH) client.
When activated, this new DoH client will allow the Windows OS to use the DoH protocol instead of classic DNS when connecting to the internet and when resolving web domains.
Instead of sending the request in cleartext to a DNS server over port 53, DoH takes the request, encrypts it, and sends it as regular HTTPS traffic via port 443. In other words, DoH effectively hides DNS inside regular HTTPS traffic.