[scarface74]

I purposefully didn't use Amazon's wording because it would be confusing to someone who doesn't know about AWS.

An "availability zone" is an isolated data center. A "region" is a group of availability zones that are geographically isolated but somewhat close to each other.

For instance, three availability zones (data centers) that are within 100 miles (making up a distance) would make up a region.

[toomuchtodo]

All of AWS' "zones" are very close to each other based on measured network latency between zone resources.

[scarface74]

They are not in "the same geographic data center".

Amazon says:

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-re...

"Each region is completely independent. Each Availability Zone is isolated, but the Availability Zones in a region are connected through low-latency links".

Backblaze hosts everything in one non redundant data center.