Why one cloud outage takes down half the Internet
Hidden dependencies: why a cloud outage in one region reaches the others
A failure in one AWS region should stay in that region. On 20 October 2025, apps on the other side of the world failed too. Why distance alone does not protect an app.
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Your ticket app lives in Virginia, so it went down with its region. Now take an app that lives far away, in the Ireland region. Its servers, its database, its zones: all fine that morning. It had no reason to notice a thing.
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Yet some apps far from Virginia failed too, in regions all over the world.
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