DNS records. Your own domain for a site

A domain is pointed at a server with DNS records, and directories keep the old answer until its TTL runs out. Point your own domain at your own server.

Diagram: a DNS record points the domain at the new server, while DNS resolvers keep the old answer until its TTL runs out, as their hourglasses show.

Networking for vibe coders — Networking from scratch on a live diagram: from home Wi-Fi to your own site on the internet