Not that much is known about the inner workings of certain parts of Amazon, Brad Stone’s great book The Everything Store: Jeff Bezos and the Age of Amazon (affiliate link) notwithstanding. After reading it, I for one still had many questions about how AWS works.
For an amazing insight into this, check out this HBR piece with Andy Jassy of Amazon. The best part about this talk: Jassy is discussing highly technical concepts in plain English. It’s a critical skill on which many tech executives could certainly improve.