The Amateur Athletic Union (AAU) is a non-profit organization in the United States that promotes and develops amateur sports. Founded in 1888, it provides opportunities for athletes of all ages to participate in various sports, including basketball, track and field, and swimming. The AAU organizes competitions, training programs, and events to help athletes improve their skills and gain exposure. The AAU also plays a significant role in youth sports by establishing guidelines and standards for competitions. It aims to foster sportsmanship, teamwork, and personal development among young athletes. Through its programs, the AAU supports the growth of sports at the grassroots level, encouraging participation and healthy competition.