IATA – International Air Transport Association –
IATA is an international representing some 230 airlines comprising 93% of scheduled international air traffic. The organisation also represents, leads and serves the airline industry in general.

ICAO – International Civil Aviation Organisation –
The ICAO is a specialized agency of the United Nations linked to Economic and Social Council (ECOSOC). It came into being on 4 April 1947 to promote understanding and security through cooperative aviation regulation.