[ugur2nd]

I'm not an expert. I'm asking because I don't know.

Did I understand correctly? You can create a site with a .onion extension without a domain on a hosting service.

I'm thinking. If you can do it this way with .onion, can you do it with something else? That would be a bit unusual.

If that were possible, being able to customize the extensions would be interesting. Being able to customize brand names. Like .mybrand, or .egg, .bread, whatever you want.

[hrimfaxi]

I think you are misunderstanding. You may want to learn more about how onion services work but in the blog post, the hosting service is the author's server/host running Caddy.

https://community.torproject.org/onion-services/overview/