Amazon Software Engineer interview questions

Hiring event. 4 sessions - 50 minutes each. The interview process was prepared very professionally, recruiters where very helpful and informative. But although I liked the interview experience, I see some deficiencies. - I didn't like that at each interview session i was asked similar behavioral questions, if consider it as unnecessary duplication. Therefore I had too little time for technical task. - Poor, only yes\no, feedback. I have no idea why i didn't get the offer. - Coding on whiteboard is hard ;)