The American Youth Soccer Organization, or AYSO, is a nonprofit organization dedicated to promoting youth soccer in the United States. Founded in 1964, AYSO focuses on providing a safe and fun environment for children aged 4 to 19 to learn and play soccer. The organization emphasizes the importance of player development, teamwork, and sportsmanship. AYSO operates under a unique philosophy known as the "Six Philosophies," which include Everyone Plays, Balanced Teams, Open Registration, Positive Coaching, Good Sportsmanship, and Player Development. These principles guide local AYSO regions in creating inclusive soccer programs that cater to players of all skill levels and backgrounds.