For sure Google zones aren't the same as AWS AZs, and I remember complaining about this years ago during that fire in a France DC. But you also said their regions are firewalls across a datacenter, suggesting a multi-region DC, which I'm pretty sure they don't have.
The overall point is accurate. Google expects you to spread things more across zones. Most users would rather zones not share buildings.
The overall point is accurate. Google expects you to spread things more across zones. Most users would rather zones not share buildings.