All implementation details for Online Services plugin functionality live inside the Game Instance Subsystem. As previously mentioned, the game instance persists for the entire lifetime of a game, from initialization to shutdown. Game instance subsystems help to organize code that you might want to access across the lifetime of a game instance into distinct systems. This project organizes the Online Services plugin relevant code into a game instance subsystem that is called "OnlineSampleOnlineSubsystem". This example implements the Title File Interface functionality.