Avantages
Most teams at AMZN are packed with smart people who just want to build awesome stuff and do it cheaply and efficiently. Management honestly cares about customers and the bottom line at the same time. The community of people there will jump to help a colleague with any problem, professional or personal, with a smile. Many more teams care about work-life balance and operational happiness in the last few years.
Inconvénients
Some teams are bogged down with uninteresting, unskilled hangers-on who want to get their salary as quietly as possible, finding as much work to do as possible whether or not it is relevant or needed. The performance measurement process is so broken it's humorous in retrospect. Managers can skew results in any direction they want. Jealous peers can kick someone out of their team with little effort or repercussions. Internal politics rarely but unavoidably create extra work and stress that ends up being for naught.