It started with a pre-night where you got to meet the people you're competing against while meeting your interviewers.
First round interview was one on one with two people, a partner and senior manager, behavioral.
Second round interview was one on one with two people, a partner, and senior manager, social.
This was the tougher round. In this round, the focus seemed to be on you and your ability to keep conversation going while continuing to ask questions for about 1/2 hour.