4 rounds first the basic OA then the group elevator pitch followed by the recruiter screening round and then at last buisness/technical round..the difficulty is medium level i guess. It was an on campus oportunity

First a phone screen. Then Called for in person "interview blitz" day. It consisted of lunch, a presentation by some employees about the rotational program, a short written coding/tech quiz and then three 45 min interviews back to back. Each interview was with two employees from various parts of Gartners tech operations. The interview questions were pretty much all behavioral style. Things like "Tell us about a time when..." mostly relating to team projects and such.