Pros
rich data, good opportunity to learn nuances of e-commerce, smart co-workers, if you are interested in data analytics, Amazon offers real big data and opportunity to generate data-driven insights.
Cons
overall Amazon doesn't have intention to retain talent. the compensation and talent review system are designed to burn out people and push them out, not to develop talents. no collaboration across the orgs. individual or group achievements and outperforming others are valued more than working together towards common goals. In such contexts, the emphasis is on winning, achieving superiority, or obtaining benefits at the expense of others, rather than sharing knowledge, resources, or success. siloed operation and tools, lack of a central system in finance. very poor knowledge sharing. PiP or stack ranking system is not based on fair performance. promotion is always subjective and political. if you are not the best friend of manager, you are screwed. wiki is a big graveyard because people tend to leave within 2 years. there are many smart people and ideas, but teams are always in transition mode, no long term memory.