There were 2 rounds of interview- technical and HR rounds. There were around 90 students that got shortlisted to the interviews after the OA round and there were 10 panels present. Each panel had one person and all of them were one on one interviews. Each panel was very different, few of them asked difficult DSA while others did not at all. I got asked only about my projects that were on my resume and he was mostly impressed with the communication and clarity. Same with my HR round. Overall, it was a bit of luck and just basic preparation and knowledge about my projects, resume and also common HR questions.