AWS Wide Spread Outage
Examine the 2021 AWS outage to understand how internal network congestion and monitoring failures cascade into global service disruption. Learn crucial System Design lessons about identifying hidden dependencies, implementing contingency plans, and ensuring independent communication systems for resilience.
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Introduction
On December 7, 2021, a major AWS outage disrupted services for over eight hours. The incident propagated across many internet services, affecting both consumer devices and large commercial platforms. Headlines like the Financial Times’ “From angry Adele fans to broken robot vacuums” highlighted the scale of the disruption across users and businesses. This event highlighted the risks of heavy reliance on centralized cloud providers. According to Gartner, five companies account for roughly ...