Can you run multiple servers on one machine (e.g. Raspberry Pi)?

I’m thinking about buying a Raspberry Pi to start my self-hosted journey. I have three usecases in mind: Navidrome server, Jellyfin server and a Pi-hole network ad-blocking. Can a single machine (like a Raspberry Pi) run these operations simultaneously? Thanks in advance!

Define “server”:

If you mean any process that serves on the network well then of course you can.

If you mean multiple containerized stacks acting as a service then yes, you can do that too.

If you mean multiple operating systems, I’m not so sure but I can’t imagine that it’s impossible.