In the world of gaming, matchmaking plays a crucial role in ensuring a fair and enjoyable multiplayer experience. Matchmaking refers to the process of pairing players together based on various factors such as their skill level, game preferences, and availability.

In distributed networking, when a program on one machine (client) executes a program on another machine (server) over a network, it is referred to as a remote procedure call (RPC). RPC is a communication technique that enables synchronous operation in a client-server environment.

Realm's mobile database is an open source, developer-friendly alternative to CoreData and SQLite.