dns - SERP Analysis

https://en.wikipedia.org/wiki/Domain_Name_System

https://www.cloudflare.com/learning/dns/what-is-dns/

https://aws.amazon.com/route53/what-is-dns/

https://developers.google.com/speed/public-dns

https://www.fortinet.com/resources/cyberglossary/what-is-dns

https://www.reddit.com/r/dns/comments/1axrqdq/understanding_what_is_dns/

https://cloud.google.com/dns

https://learn.microsoft.com/en-us/windows-server/networking/dns/dns-overview

https://www.oracle.com/cloud/networking/dns/

https://dnsmadeeasy.com/