Airbnb - How Unified or Disparate Were the Tools Used by Developers at Airbnb?

How unified or disparate were the tools used by developers at Airbnb? And then similarly, like, how was your platform or Devx group broken up or aligned around those different areas. I would say that the built test deploy style tooling themselves were relatively standardized. But within kind of these different what we call platforms, there was pretty well standardized differences laid more and approaches to testing.