TOS vendors provide products tested in their standard behavior but not under specific use cases relevant for the terminal. The terminal team should prepare test scenario and use cases. In relation with customisation and interface/integration with in house software or third party software the test becomes even more important and crucial as end-to-end business cases should be verified and solutions aligned (release management).
During the project phase each vendor will supply different patches or releases to follow terminal demands and every time they must be tested globally. Partial tests are not sufficient
Like all software, even your TOS requires constant release
The adoption of structured Quality Assurance (QA) and testing approach will return you:
They have already chosen DSP