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Duration of the AWS US-EAST-1 event (Oct 19–20, 2025): a DynamoDB DNS-automation fault in one region that cascaded to dependent services and to features anchored in that region

~14.5 hr (14 h 32 min)observed

Value kindobserved — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range.
As of2025-10
SourceAWS post-event summary; InfoQ; ThousandEyes · Opening summary: event began October 19 at 11:48 PM PDT and ended October 20 at 2:20 PM PDT, a duration of 14 hours 32 minutes.
Reviewchecking…review by 2027-10-20 · standard cadence
Recorded changeslast 2026-10-16 · 2 revisions tracked
Claim idduration-of-the-aws-us-east-1-outage-oct-19-20

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