[lamnk]

> Colocated systems tend to work very well at first when the original engineers who set it up are all still at the company and it hasn't run long enough to start encountering rare failure modes. They quickly become a nightmare when your engineering staff turns over multiple times and nobody can remember who knows how to do what on the colocated system or if the documentation is up to date or not.

And AWS systems do not have to face the same problem? Is it easier for a new staff to come in and modify a millions worth of AWS system than a colo system?