If Amazon is down in the US, would this work? The fact that they mention “any Amazon customer can access this” makes me think it’s intermingled / not cleanly separated and isolated from US infrastructure
The docs explicitly describe this cloud's independence from the US.
> The AWS European Sovereign Cloud will be capable of operation without dependency on global AWS systems so that the AWS European Sovereign Cloud will remain viable for operating workloads indefinitely even in the face of exceptional circumstances that could isolate the AWS European Sovereign Cloud from AWS resources located outside the EU, such as catastrophic disruption of transatlantic communications infrastructure or a military or geopolitical crisis threatening the sovereignty of EU member states.
From what I’m understanding, it won’t be dependent anymore on us-east-1, but this isn’t mentioned explicitly. This is great, especially if you consider that some cut cable in the ocean could literally turn off a big part of the companies in a whole continent.
AWS has the notion of "partitions", which is a technical boundary encompassing multiple regions. This mostly doesn't come up, but it does poke through in certain implementation details, like how AMI manifests for groups of regions (partitions) need to be encrypted for different public keys. Each partition has a specific region which must be targeted for certain partition-wide actions, such as managing IAM endpoints in other regions.
https://docs.aws.amazon.com/whitepapers/latest/aws-fault-iso...
Normal AWS (`aws`) traces to `us-east-1`. AWS GovCloud (US) (`aws-us-gov`) is distinct, based in `us-gov-west-1`. AWS in China (`aws-cn`) is distinct again, based in `cn-north-1`.
The AWS European Sovereign Cloud is implemented as a distinct partition – `aws-eusc` based in `eusc-de-east-1` – so it has exactly as much in common with normal AWS as AWS GovCloud (US) or AWS in China.