Extensive interview process focusing on fit/experience, as well as problem-solving and communication. These are tested through a fit-style interview and case-interview respectively. My suggestions would be to prepare for both the fit interview and case interview components with similar rigor. It is easy to focus on cases, but even if you nail the case you aren't an attractive candidate if they can't see themselves being stuck on a plane with you.

Multiple rounds with consulting case interview portions and fit portions. Each round of interviews had multiple interviews, and the interviewer gets more senior as you progress through the interview process