DNS
also Domain Name System
The system that translates human-readable domain names into IP addresses and stores records (A, CNAME, MX, TXT) that route traffic and verify domains.
Analogy
Like the internet's phone book, looking up a name to find the right address.
Why it matters
You edit DNS records to connect domains, set up email authentication, and verify sending domains for your GHL and funnel work.
In practice
You add a CNAME record pointing a client's subdomain to their GHL funnel.