Amazon has a few superpowers. One is writing, but the other is so many metrics. I worked at AWS and saw how the weekly metrics meeting was ran, with execs questioning why some metric, out of 10s of thousands, was behaving in a certain way. A good product manager had a good reason, an acceptable one found a reason quickly after the meeting. Without an understanding of the business writing is worthless, and one of the ways Amazon creates this understanding is comprehensive metrics gathering.

It is the combination of business understanding and writing that is Amazon's superpower.