Pros
I have learned new things every week. This is not a cliché, it is my actual experience. I am also enjoying being dared, challenged. Amazon competes against itself and so do I. There's no joy competing against others since once you beat them you end up being demotivated. Here I can work to give the best of me and learn how to increase my capabilities. I joined Amazon as a Sr. Vendor Manager after being a Marketing Director at LG Electronics for 4 years and a Brand Manager at P&G for 8 years. Amazon has fulfilled my expectations which was moving into a company with people smarter than me and where I constantly learn new things without being bored about more of the same.
Kontras
The level (bar) is strict and it always moves higher. This is also a "hands-on" company in which you actually get to do the job. It doesn't matter if you are a manager you are a doer. I like that but some people are not used to it, specially if they have climbed up the ladder to a Sr. Manager or Director position somewhere else.