3 rounds - The first round will be a case study 2nd will be a discussion on it, 3rd will be an HR round. Usually data-heavy case studies which needs to be done in few hours and needs to be discussed with the interviewer

Smooth and transparent. Technical and manager rounds are mostly constitutes around how you go about a problem/situation, thinking process and execution. Overall, the entire process depends on how you go about it, just need to be confident and cognitively strong with good thinking and problem solving skills