The HR shortlisted the CV based on the requirements they had. Was called in for 4 rounds of interviews, all the rounds being elimination rounds. Almost all the rounds are based on the past experience, projects that you work on. Try to add in Amazon principles to the examples that you would tell. They would ask you indeapth questions on the answers you give them. Prepare well will numbers on the stuff you worked on. Had the first 3 rounds at Hyderabad and was told that I would get a telephonic interview for the last round in a week or 2 and was scheduled for athe call in the 3 Rd week.