It’s both detailed and holistic. While they test you on domain knowledge, CCAT is an integral part too. The tests are varied and limited and invokes a candidate to be on their toes. I enjoyed this interview process because I looked at it as an opportunity to test my mettle overall. They look for more than domain knowledge from what I can see because skills can be inculcated while attitude and aptitude has to be built within , usually by experience and this is a good experience for a professional to have.