4 ms·
https://en.wikipedia.org/wiki/Amadeus_IT_Group https://en.wikipedia.org/wiki/Amadeus_IT_Group More than 200 million airline bookings, 850 million total (travel
by tom_mellior 8y ago
https://en.wikipedia.org/wiki/Amadeus_IT_Group https://en.wikipedia.org/wiki/Amadeus_IT_Group
More than 200 million airline bookings, 850 million total (travel and hotel) bookings per year. They are known to run their airline reservation system on Sicstus Prolog, though I don't know how well that is publicly documented in writing.