After taking a 30-45 minute skills test online (basically to reinforce that you have a proper grasp on the English language), an in-house recruiter set up a phone screen for me with a team lead a few days later. That lasted for 30 minutes, consisting entirely of behavioral questions ("Tell me about a time when..."). A day after that, the same recruiter set up an in-person interview with 3 team managers at Amazon HQ in Boston. Each interview was 30 minutes, every single question was a slightly different form of a behavioral question from the phone screen, and the managers were unable to discuss any of the actual job duties or hard skills needed due to confidentiality.
I made it a point to ask specific questions about the culture, the company, the expectations, long-term growth, and individual backstories behind the interviewers themselves, which they seemed to appreciate at the time. Nevertheless, I was contacted via email the next day by the recruiter saying they had someone "closer to target" and when asked what I could improve upon next time, or why I did not receive an offer, I was told "it's a mix of different variables", so that wasn't helpful.
I get the impression they specifically want people for the role that are very happy-go-lucky, go-with-the-flow, and pride themselves on being a "team player". Most of my stories for the questions involved taking initiative and being forward and frank with my superiors, so that may have turned them off when they truly want people more concerned with doing what they're told with a big smile on their face :)