The main content of Free version of PlayFab:
First of all, we can satisfy the amount of your title players. Since you have no more than 100 players, 10k total minutes of PlayFab Party Connectivity and Voice are enough. Then, if your server program functions are basic, you can use a single core VM ,750 free compute hours are enough.
2 People are following this question.
Unreal/Unity Example project movement sync
Could not find scene object with sceneid:82C3F1BD4412428E Error after joining Playfab server as a Client
Debugging with LocalMultiplayerAgent - Current State Initializing
How do I setup secure WebSocket sever on Playfab multiplayer