When a Cloud Region Fails: Rethinking High Availability in a Geopolitically Unstable World

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Posted on Wed Apr 22 2026 | 2:30 pm

Sovereign fault domains are failure boundaries defined by legal, political, or physical jurisdiction rather than hardware topology. The article maps geopolitical events to known distributed-systems failure modes, argues multi-region should replace multi-AZ as the HA baseline for systems crossing jurisdictions, and outlines design patterns, chaos experiments, and an ALE model to justify the spend.

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