what are the system strategies to be employed in adapting a new airline system?

Question

please be noted that there is an existing working system that will be replaced. considerations include travel agencies, and how to deal with problems that will arise.

the new system is employed in the operations. it carefully considers travel agencies as "terminals" in its ticketing operation. however, there is an existing system that will be considered.

Answer 1

An airline uses many systems. Marketing, Sales, Security, Maintenance, Operations, Flight Crews, Training, etc.
Which systems do you wish to discuss?