Analysis Amazon's US-EAST-1 region outage caused widespread chaos, taking websites and services offline even in Europe and raising some difficult questions. After all, cloud operations are supposed to have some built-in resiliency, right?

The problems began just after midnight US Pacific Time today when Amazon Web Services (AWS) noticed increased error rates and latencies for multiple services running within its home US-EAST-1 region.

Within a couple of hours, Amazon's techies had identified DNS as a potential root cause of the issue, specifically the resolution of the DynamoDB API endpoint in US-EAST-1, and were working on a fix.

However, it was affecting other AWS' services, including global services or features that rely on endpoints operating from AWS' original region such as IAM (I

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