How do DNS work?

Question

When buing an URL, what is important? Who ownes it in the first place?

Answer 1

Please limit your question to one per post.

You may learn about DNS here.

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

Important info before buying URL here

https://domains.google/learn/5-things-to-watch-out-for-when-buying-a-domain/