SpatialOS running in the cloud needs to authenticate any game clients which request to connect with your game.
During game development, you can use the Improbable development authentication services but once in production, you need to set up your own authentication server.
Note: Using your own authentication server and third-party authentication provider is only available to select customers for testing. If you'd like access, raise a support request (for customers with a service agreement) or ask on our forums.
See the following documentation for guidance on this.
How to use the Improbable development authentication services:
Create and set up your own authentication server for games in production:
Migrate your authentication server from a legacy set up:
Updated about a year ago