What is the difference between a party, a team in a game, and a permanent team?

A party is a one-off group you put together for a single game, while a permanent team is a squad that lives on your profile and carries its own name, logo, rating and history. When you join a team game you choose between the two: create a party for this game only, or bring a permanent team you already captain. A team inside a game is the squad that actually plays that match, and it can come from either route. Parties disappear with the game, permanent teams keep their stats, so use a party for a one-off kickabout with friends and a permanent team when the same people play together regularly.