The ASEAN Football Championship, also known as the AFF Championship, is a biennial football tournament that features national teams from the Association of Southeast Asian Nations (ASEAN). Established in 1996, the tournament aims to promote football in the region and foster friendly competition among member countries. The championship typically includes a series of matches leading to a knockout stage, culminating in a final to determine the champion. Countries like Thailand, Vietnam, and Malaysia have historically performed well, making the tournament a significant event for football fans in Southeast Asia.