[xodice]

If AWS fully decentralized its control planes, they’d essentially be duplicating the cost structure of running multiple independent clouds and I understand that is why they don't however as long as AWS is reliant upon us-east-1 to function, they have not achieved what they claim to me. A single point of failure for IAM? Nah, no thanks.

Every AWS “global” service be it IAM, STS, CloudFormation, CloudFront, Route 53, Organizations, they all have deep ties to control systems originally built only in us-east-1/n. va.

That's poor design, after all these years. They've had time to fix this.

Until AWS fully decouples the control plane from us-east-1, the entire platform has a global dependency. Even if your data plane is fine, you still rely on IAM and STS for authentication and maybe Route 53 for DNS or failover CloudFormation or ECS for orchestration...

If any of those choke because us-east-1’s internal control systems are degraded, you’re fucked. That’s not true regional independence.

[hvb2]

You can only decentralized your control plane if you don't have conflicting requirements?

Assuming you cannot alter requirements or SLAs, I could see how their technical solutions are limited. It's possible, just not without breaking their promises. At that point it's no longer a technical problem

[xodice]

In the narrow distributed-systems sense? Yes, however those requirements are self-imposed. AWS chose strong global consistency for IAM and billing... they could loosen it at enormous expense.

The control plane must know the truth about your account and that truth must be globally consistent. That’s where the trouble starts I guess.

I think my old-school system admin ethos is just different than theirs. It's not a who's wrong or right, just a difference in opinions on how it should be done I guess.

The ISP I work for requires us to design in a way that no single DC will cause a point of failure, just difference in design methods and I have to remember the DC I work in is completely differently used than AWS.

In the end however, I know solutions for this exist (federated ledgers, CRDT-based control planes, regional autonomy but they’re just expensive and they don’t look good on quarterly slides), it just takes the almighty dollar to implement and that goes against big business, if it "works" it works, I guess.

AWS’s model scales to millions of accounts because it hides complexity, sure but the same philosophy that enables that scale prevents true decentralization. That is shit. I guess people can architect as if us-east-1 can disappear so that things can continue on, but then thats AWS causing complexity in your code. They are just shifting who is shouldering that little known issue.