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The Migration Flip That Took Down a Live Customer (and the Blast Radius I Could Measure in 12 Seconds)
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The runbook said the domain was in account A. It was in account B. Verify ownership before touching live DNS.
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The False 200: When Removing a Binding Reveals Your Verification Was Lying
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Give irreversible infrastructure identifiers an intentional name
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My backups had been dead for three weeks. I found out by accident.
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A Migration Became the Audit I Had Never Run
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The blog merge that turned into a platform decision
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The Migration Ticket Was Hiding a Landing Page
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Env drift was the real bug
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1900-01-01 Is Not a Date: The Zero-Datetime That Corrupts Every Migration