The NCAA tournament, also known as "March Madness," is an annual college basketball competition in the United States. Organized by the National Collegiate Athletic Association (NCAA), it features 68 teams competing in a single-elimination format to determine the national champion. The tournament typically takes place in March and April, attracting millions of viewers and generating significant excitement among fans. Teams qualify for the tournament through automatic bids, awarded to conference champions, or at-large bids, selected by a committee. The tournament is divided into four regions, with each region's winner advancing to the Final Four, where the last remaining teams compete for the championship title.