Pros
Amazon is indeed a very peculiar place to work. There are a lot of opportunities to move around, intelligent people, there is never a dull moment and diverse culturally. My experience has been positive so far, but it differs from team to team. I've known people who left the company due to a bad experience with management. They either left at their own or were fired. The relocation package is very generous and the hiring team does an excellent job of recruiting talents.
Cons
Be ready to work long hours, have little work-life balance, bad health benefits, no career guidance, lack of processes, still runs as a start up, little teamwork, raises are miniscule and I wish they were as obsessed with their internal customers as they are with external ones.