FIFA, the international body that oversees international association football competitions, has developed its own code of rules for indoor football (which they refer to as futsal), while indoor soccer is sanctioned by a number of national and international organizations that are unaffiliated to FIFA.
FIFA has developed its own code of rules for indoor football (which they refer to as futsal). Indoor soccer is sanctioned by a number of national and international organizations. This number of national and international organizations are unaffiliated to FIFA. FIFA is the international body. This international body oversees international association football competitions.