Automated matchmaking (AMM) is a StarCraft II battle.net feature, similar to the one in Warcraft III. Players play 5 qualifying matches and are then assigned a skill level, which determines the league and division they will be placed in. Skill levels will be reevaluated over time. Players are placed into separate brackets for 1 vs 1 and team matches and teams can participate in anonymous matchmaking. There is a ladder within each skill league. The AMM helps control smurfing, along with players only being allowed one account per purchase of StarCraft II.