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A comment on Is Amazon's cloud service too big to fail?. Parent comment

Re:Is Amazon's cloud service too big to fail? by matthewrudy on Wednesday August 02, 2017 @02:18PM (#14913198)
A single availability zone can be spread across many physical data centres.

According to this rackspace article, the largest AZ has 5 data centres.

https://blog.rackspace.com/aws-101-regions-availability-zone...

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Re:Is Amazon's cloud service too big to fail? by myusernameisok on Thursday August 03, 2017 @03:01AM (#14917521)
Take this for what it is - I'm a software developeer who works in the cloud, not a cloud expert.

The abstraction behind AZs is what every AZ counts for at least 1 data centre. So for every region there is at least 2 AZs, and every AZ means at least 1 data centre (or 5 in your link).

This just means it's harder to take out a whole region by destroying individual data cetnres. Since most regions consist of 2-5 AZ, and AZs consist of 5+ data centres, that means destroying dozens of data centres.

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