Source:- rhonabwy.com Tier your tests Not all tests are equal, and you don’t want to treat them as such. I have found 3 tiers to be extremely effective, assuming you’re working on a system that can have some deep complexity to review. The first tier: “smoke test”. Lots of projects have this concept and it is a good one to optimize for. This is where the 10 minute rule that SemaphoreCI is promoting is a fine rule of thumb. You