Heavily-utilized websites are like icebergs. You see the homepage, but what about the constant ongoing work to ensure sellers don't game your review system? Wha

Heavily-utilized websites are like icebergs. You see the homepage, but what about the constant ongoing work to ensure sellers don't game your review system? What about emergent product categories? What about integration with your competitor's new smart home device? Amazon doesn't pay most of its engineers to sit around.