CNAME Record

A CNAME (Canonical Name) record creates an alias from one domain to another. Instead of pointing directly to an IP address like an A record, a CNAME says "this domain is the same as that domain." For example, www.example.com might have a CNAME pointing to example.com, which then has an A record with the actual IP. CNAMEs are commonly used for subdomains and for services like Heroku or AWS that give you a hostname instead of a static IP. A CNAME cannot coexist with other record types at the same name.