Ventajas
The technology is cool. There are some very smart engineers there. It looks good to have Amazon on your resume.
Desventajas
Extremely toxic culture from middle and upper management. Promotion is extremely subjective. I was offered a 0% raise after being give an "exceeds expectations" perf review. I was only offered a raise (of 30%, I was severely underpaid) after I threatened to leave and lined up another offer. I was ultimately offered a 60% raise to stay and turned it down. I was treated like dirt. The turnover rate was over 75% for my team in 2 years. For a lot of the org it is this way. A lot of upper management hired their friends rather than qualified individuals for very high up positions. I was used and used until I couldn't take it anymore. I would never work here again, and I contemplated not paying back my sign on bonus due to misleading hiring practices and borderline harassment treatment by management. I can confidently say this company has huge turnover for good reason.