Migration occurs increasingly frequent in IT. Reasons for this often are the possibilities of cost reduction by replacing the mainframe, or the disappearance of older technology. The existing applications often contain valuable and approved functionalities, which are worthwhile to migrate. Because migrations often relate to information systems that are critical for business, the damage is substantial when faults are present in the system after the migration: the risks are large. In this paper the test approach for a  successful migration is described.

Testing of Migrations