It was an online interview that lasted about 40 minutes. It was more of a conversation and less of a formal interview. Some key questions that were asked:
1) Tell me about yourself.
2) Why MBA?
3) What do you know about INSEAD?
4) Are you applying to other schools?
5) Have you worked internationally?
Then there was a discussion about my work: what were my job responsibilities, how is my firm structured, who are the key clients, etc.