[count]

Understand that there isn't 'An S3 service'. There are multiple S3 services in multiple Regions within AWS, and they're all operated independently of each other (this goes for all other AWS services too) so that cascading failures/etc. don't occur between regions. So, use 2-3 different S3 regions, or some other multi-cloud solution...

[zeckalpha]

How independently? Like independent implementations of the software? They just implement the same interface?

[jorgenj]

As in, independent installations/configurations of the same service...

[zeckalpha]

Is that enough?