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by clarkdave 619 days ago
> It's not like there is a mirror datacenter just two blocks away

Isn't that exactly what Availability Zones are for? They're physically separate[0] datacenters and each one contains a copy of each S3 object (unless using the explicit single-zone options)

It's also straightforward (although not necessarily that cheap) to replicate S3 objects to another region

[0] https://aws.amazon.com/ec2/faqs/?nc1=h_ls#Platform