The International Air Transport Association (IATA), based in Geneva and Montreal, was founded in Havana in 1945 as an umbrella organization for commercial international scheduled air transport companies. Its predecessor organization from 1919 was the International Air Traffic Association. The association functions in three main areas: as a trade association, in fare coordination and provides industry services, which are financed by the participating companies. Other tasks include the legal and technical coordination of international air traffic.
Source: IATA, 2024
https://www.iata.org/en/about/