Dan Burger in IT Jungle:
Rather than picking up whatever tool was laying around, RPG team members and Rosa found notable advantages provided by the already in-house tool. For one, there is a great deal of data management done on the iSeries box. The team is very familiar with the data structure, and LANSA made use of all the existing data structures. LANSA also had an RPG-friendly way of calling RPG programs. It also allowed developers to take advantage of existing back-end practices that were working just fine, so there was no requirement to write code from scratch.
A great testimonial of an IT department bringing their iSeries RPG programming staff, who were smart and knew the business well, into internet development using the LANSA tool set.
(via Don Nelson)