The Esports Championship Series (ECS) is a professional esports league that primarily focuses on the game Counter-Strike: Global Offensive. Launched in 2016, it features top teams from around the world competing for significant prize pools and prestige. The league is known for its high-level competition and has attracted a large audience, both online and in live events. ECS operates in a seasonal format, with teams participating in regular matches to earn points and qualify for playoffs. The league is organized by FACEIT, a platform that provides competitive gaming services, and has contributed to the growth of the esports industry by promoting professional gaming.