The International Tennis Federation (ITF) is the world governing body of tennis, one of the few truly global sports. The ITF's mission is to further grow and promote the sport worldwide, to develop the game at all levels and ages, and to make, amend and uphold the rules of the game. One of the ITF's key roles is to organise major international tennis team events, including the Davis Cup by Rakuten, Billie Jean King Cup by BNP Paribas, and the Olympic Tennis Event.