HTTP HyperText Transfer Protocol
The protocol web browsers and web servers use to talk to each other.
When you type a URL, the browser sends an HTTP request (GET /lexikon/) to the server, which responds with an HTTP response (status 200, body contains HTML). Text-based and relatively easy to read.
Common methods: GET (fetch), POST (create), PUT (replace), DELETE (remove). Common status codes: 200 OK, 404 Not Found, 500 Server Error.