Yet, our organization was hundreds of people, and the system had grown so large and complex that it had become impossible to learn how it all worked.

Which is what makes Bezos' service mandate [0] a classic exposition of Conway's Law [1].

  All teams will henceforth expose their data and functionality through service interfaces.
  Teams must communicate with each other through these interfaces.

0. https://gist.github.com/kislayverma/d48b84db1ac5d737715e8319...

1. https://en.wikipedia.org/wiki/Conway%27s_law