This project consist of making a migration plan for a booking simulator. The booking simulator is in the context of Amadeus, the company I did the intern in. The simulator consists of simulating the user demand (bookings and cancellations of flight tickets) and study how Amadeus systems react in order to maximize the revenue obtained. The migration is focused on the presentation layer of the application: From a Java Swing frontend to a web technology interface. This web technology has to be based on AJAX techniques. A study of AJAX platform has been performed. Several RIA (Rich Internet Application) has been taken in account. The migration plan is detailed and explained in the project. The project has an important weight of Airlines' culture. The project has been developed in the Revenue Management Team.