[anamexis]

There are no vendor specific extensions or behavior here, are there? Isn't it just a different billing structure?

[williamdclt]

I suppose “super low latency” is behaviour, in the sense that “a large enough quantitative difference is a qualitative difference”. If you rely on the perf and only S3 provides that, then you effectively are locked into S3 implementation

[jacobr1]

Notifications, for event processing architectures aren't part of the API common to these systems