They use the STAR method which isn't anything new and they do send you documents to help you prepare. That being said, the folks who were actually interviewing me were unprepared, mundane, and didn't even seem to know anything about the job or team. Not sure how that's relevant considering Amazon is a huge company with varying cultures depending on each team and pillar...I had several interviews and ended up calling it because it was so much time an effort I was putting in while getting very little out of the interview. Suggestion to Amazon is provide candidates with individuals who can speak to the basics of the role and responsibility, people with personality would be ideal... You need to engage candidates as much as they need to wow you.