GCP’s us-west1 Outage Mapped a Failure Domain Your Service List Couldn’t See
A cloud failure domain is not the set of services you selected — it’s the set of infrastructure those services actually share, and most architecture diagrams never draw it. On Thursday, August 20, 2026, a scheduled maintenance window at Google Cloud’s us-west1 region turned that distinction from an abstraction into a documented, two-hour, twenty-two-minute incident….