I interviewed there several years ago and although the interview process was long (several phone interviews and then a full day on-sight) it never really felt like a hard interview process. Of course after I interviewed there I heard nothing from them for 2 months, assumed they weren't interested, then they gave me a written offer out of the blue for a completely different job that had nothing to do with what I'd interviewed for and wasn't really aligned with my skills or interests, so I have no idea what kind of bizzaro twilight zone interview process I might have fallen into.

From talking to ex-amazon coworkers you don't have to have gone to a handful of ivy league unis, you don't have to be exactly 22, you don't have to be a white male, you don't have to be in the same frat as the CEO. Doesn't mean you aren't going to get put thru the interview wringer like any other low social status job.