Before you get called for the onsite interview always remember, Amazon as a company is averse to hiring for potential in a candidate. They look for candidates with a certain something and even if you are an extremely capable candidate there could be chances that you will still get rejected. I had two phone screens with various recruiters and then was called for an onsite in person interview in their Seattle office. All this happened in a very quick timeframe , so if they are really looking for someone and you come across as a good prospect on the phone rounds they will move forward quickly. They provide excellent accommodation, travel is also taken care of by their teams and reimbursements on expenses. At the onsite I was subjected to ONLY behavioral interviews with 7 interviewers for 7 hours, no food was offered. It is continuous and back to back . Lots of behavioral /situational type questions only. What they tend to forget is success is a relative term and will differ based on different companies, different career stages, different teams, bosses and company cultures. It was NOT a difficult interview, more so if you have different situations from your past experiences prepped in your mind ahead of time. Also recruiting is not rocket science so their questions are not tailored for a role , its more of a company wide parameter based questionnaire that the interviewers ask questions from. I felt a lot of questions were irrelevant to the role i will be performing if hired. Also they also do not share feedback for rejections , so one never learns.