Long technical interview by the team leader to get a feel for your technical knowledge, 3rd party product experience, as well as character compatibility with end-client manager.
There was significant emphasis on knowledge around the daily routine tasks you would be performing / responding to and I guess, getting a sense of whether you would be a quick learner to plug any gaps in your knowledge.
Aside from that, it was quite easy going with a "getting to know you better" kind of back and forth conversational style.
Overall I would say the questioning was a bit intense and no nonsense at times, but ultimately more relaxed than some of the other interviews I have done.