AWS had the S3 incident affecting all of us-east-1: “Other AWS services in the US-EAST-1 Region that rely on S3 for storage, including the S3 console, Amazon Elastic Compute Cloud (EC2) new instance launches, Amazon Elastic Block Store (EBS) volumes (when data was needed from a S3 snapshot), and AWS Lambda were also impacted while the S3 APIs were unavailable.”
Which services in other regions? I remember that day well, but I had my eyes on us-east-1 so I don't remember what else (other than status reporting) was affected elsewhere.
S3 buckets are a global namespace, so control plane operations have to be single-homed. As an example, global consensus has to be reached before returning a success response for bucket creation to ensure that two buckets can't be created with the same name.
The availability of CreateBucket shouldnt effect the availability of customers apps. This tends to be true anyway because of the low default limit of buckets per account (if your service creates buckets as part of normal operation it will run out pretty quickly).
The difference with Google Cloud is a lot of the core functionality (networking, storage) is multi region and consistent. The only thing thats a bit like that in AWS is IAM, however IAM is eventually consistent.
AWS had the S3 incident affecting all of us-east-1: “Other AWS services in the US-EAST-1 Region that rely on S3 for storage, including the S3 console, Amazon Elastic Compute Cloud (EC2) new instance launches, Amazon Elastic Block Store (EBS) volumes (when data was needed from a S3 snapshot), and AWS Lambda were also impacted while the S3 APIs were unavailable.”
https://aws.amazon.com/message/41926/