Hi, About TDD I have few points to mention. first is that in my opinion, TDD is very suitable solution for REST API's servers, and it will be a little complicated in front-end development. I can say 99% of the times I'm not following this approach because it's time taking. and I'm not sure that why developer has to be involved this much of testing stuff, Developer do it's unit & sanity tests on it's own side and that will be enough for developer, more than this developer time is waisting. And Inside the teams with high pressure of work load, they never use this and some time they pass the sanity test also to QC team. Totally It's great to follow TDD, anything has a cost. and this one in cases cost time more that save it. cheers.