What is the best way to organize multiplayer in unity, what to choose?

Question

Unity

What are the ways to organize multiplayer at the moment, that is, how many people can be kept online (meaning not in the same room, but in different ones), what is more convenient when working with databases and how much will it cost?
The game is turn-based, 2 players in one room, exchange of data about once per second, data about the pressed button that causes further actions.
Also, if someone used a paid photon or node js + socket io, please share your experience, how many people can be kept online as much as possible.

Answer 1

node js + socket.io, even on a weak vps, can hold thousands of connections at the same time, the emphasis is only on the amount of memory on the server. If it were necessary to make a step-by-step online, I would implement this bundle.