There were 4 rounds. 1 - Written. Which comprised of 6 sections namely Quant, Reasoning, English, Technical, Attention to detail and data interpretation.The test vendor was hirepro. 2 - Phone screening. They asked basic questions about yourself, job, current you're working on and some puzzles. 3 - Case study. The most challenging round. A business case study was given of around 10 pages. 30 mins to analyse and understand the whole case. Then followed by an interview of around 1 hr where the interviewer basically asks your approach to all the questions given in the case study. Be prepared with SQL. Especially joins and sub-queries. As the technical questions are mostly from sql. 4 - Behavioral + Fit round. The interviewer asked questions namely about yourself, questions from your resume, puzzles, some technical questions, what do you know about ZS, why ZS, guesstimates.