The Ecuadorian Serie A is the top professional football league in Ecuador. Established in 1957, it features 16 teams competing annually for the championship. The league operates on a system of promotion and relegation with the Ecuadorian Serie B, the second tier of football in the country. Each season, teams play a series of matches, and the club with the most points at the end is crowned the champion. The top teams also qualify for international competitions, such as the Copa Libertadores and the Copa Sudamericana, enhancing the league's prestige and competitiveness.