amadeus is a Spanish information technology company founded in 1987 and headquartered in Madrid, the world's largest provider of marketing and distribution information technology for the travel industry and one of the world's largest software companies. amadeus provides information technology solutions for airlines, hotels, travel agencies, car rental companies and other travel service related companies. amadeus provides information technology solutions for airlines, hotels, travel agencies, car rental companies and other travel-related companies, covering more than 190 countries and regions worldwide.