Random case studies that try to test different aspects. The interviewers didn't seem really happy about the effectiveness of them cause they kept saying that. Lots of cancelations caused the interview process to take more than month. Made it through all of them and to the most random of all (last interview) called leads interview which was meant to test how I make decisions. They asked about my place of birth (not intentionally I hope, because turns out that's illegal) and some of the decisions I made along the way.