To test or not to test is not anymore the question. The dilemma is what vendor to choose. On one scale, we have software houses, companies that provide the services of custom software development including testing and consulting. And on the other scale, we have independent QA and testing providers whose main activity is software quality assessment.
Do you establish a commercial relationship between business entities? Do you strive to grow your IT business? Do you want to engage decision makers of IT companies into service buying cycle?