Many CTOs or team leaders struggle to have an effective testing strategy. While having good coverage and a good mix of test types, the number of bugs in production is always quite high and the throughput of the team is not skyrocketing. Why? I will try to answer in this talk. We will cover how to apply strategic decision-making to testing, trying to find the right test for the right job. And beware, no testing could be a completely fine testing strategy.