There were 4 main rounds in the hiring process and I applied through my college but off campus. 1. First round was written test and basically to test your general aptitude. I'll suggest to attempt the easier questions before and manage your time accordingly because in the end, only the number matters. 2. Then they called us for interview in their Gurugram office (In my case). For this interview, they selected 3 of us amongst >50 applicants. And our accommodation and transportation was on them. So, you don't have to worry about that. Now, about the interview, it was case study round with time constraint. They gave each of us a case study book of 11 pages which has 4 case studies with sophisticated data like in tabular form with graphs and charts on it. We had to analyse the data and come up with answer to the questions printed on the very last of the each case studies. 3. This round is fully connected with your last round. Basically in this round, there will be one to one interview of each candidate with their analytics expert. They will ask the cross questions about the answers you gave in the last round and you have to justify how you came up this solution and is it only the answer to this questions? If there are others answers also, then didn't you included in them in yours? And they will check your confidence and your depth knowledge in analysis. 4. This was the last round, Interview with the manager of the hiring team. So, this is kind of HR and Technical both. In this round, the interviewer asked some good puzzles and riddles. Some of them were new for me and some were familiar. I'll really recommend you all to look deep into the puzzles available in YouTube channel 'Ted-ed'. These riddles will help you to build your standard in case of solving them. And this round, they will ask some HR questions also like Why ZS? Why this profile? Round 2-4 were held in their office, and it was a full day event.

it started off with an aptitude test and it was fairly simple. then there was a video interview round, which only works on your expressions and there is no one on the other side who would ever listen to it. then there was a case study round where 4 case studies were to be solved in 30 mins. the interview was interactive and contained puzzles and guesstimates.