I'v read the document of Playfab Multiplayer again and again.
Before trying to start coding, i just wondering is there any suggestion to me, because my server is so simple it is just:
1. A lobby that players can create/join room to play.
2. Each room is a repeater that just broadcast all incoming messages to others who in this room.
As simple as i can do, the lobby and the repeaters should be just one server program(a simple C# builded exe), and there should be serveral servers runs at different regoins to gain low delay for local players.
For my knowledge, the playfab multiplayer system can works since it can mantain regoin servers, but is it suit for my case, if i just instance one server for all region players - maybe thousands players connected in, good choice?