First round - First round is technical exam.It covered topics like Programming,pointers,DBMS,OS,Unix. Next we to write two programs. One question I remember is -Reversing of tree. Exam is conducted in our college and selected candidates need to attend further rounds at amazon campus Next rounds- There are four rounds and all four are technical.They eliminated some people after 1st and 2nd rounds also.I attended all four rounds but I couldn't make to the offer. The role I attended basically needs Programming ,Troubleshooting, Unix /Shell scripting So there were questions based on Unix commands(mostly grep,sed,awk) and simple scripts.Also troubleshooting questions were asked but I don't have more knowledge about troubleshooting like what you do when the amazon.in website is not loading properly .How do you find the cause and solve it.? Coming to programming..they made me wife atleast 2 programmes in every interview First one is slightly easier and they slowly raise to higher level.Test your thinking, speed and approach.They will also help when you get struck.Also they ask questions and queries from DBMS. And also data structures and algorithms. Also they have a prepared set of questions on pointers from which they asked 4,5 questions to me.