Google’s public DNS service now comes with support for the DNS-over-TLS security protocol. DNS resolvers are the ones working restlessly in the background to convert domain names such as google.com to their corresponding IP address the web browsers use to connect to that specific website’s web server. Google is the fifth entity which decided to add the protocol to its public DNS resolver service, with Cloudflare, CleanBrowsing, Quadrant Information Security, and Quad9 being the first companies to do it.
Source: https://www.bleepingcomputer.com/news/google/google-adds-dns-over-tls-support-to-its-public-dns-service/