Making maximum use of legacy code: Transavia Internet booking engine

Summary form only given. Transaction processing in the airline industry has a rich history. The IBM transaction processing facility (TPF) platform played, and still plays, a major role in the airline industry. We introduce a wrapper on the TPF platform itself to access the legacy applications. A very pragmatic and successful approach that resulted in a very thin Web server made it possible to offer real-time e-commerce functionality against a very low price per booking.