An AWS US-EAST-1 outage in October 2025 took down European digital services despite companies believing their infrastructure was EU-only. The incident exposed hidden architectural dependencies where critical services like IAM, authentication, and control planes route through Virginia data centers. European banks, healthcare providers, and government agencies experienced severe disruptions. The analysis examines GDPR compliance failures, Schrems II implications, and how cross-border data flows occur without user notification. CIOs are advised to map control-plane dependencies, review AWS contracts for regional sovereignty gaps, and prepare for regulatory scrutiny as European data protection authorities investigate cloud provider compliance.

12m read timeFrom jee.gr
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Executive SummaryTable of ContentsWhat Happened in US-EAST-1, October 2025Why a US Outage Grounded European Digital LifeThe GDPR and the Cloud: What Users and Companies Don’t KnowSchrems II: The Legal Earthquake Beneath the OutageAWS Agreements and Regional DependenceThe Single Point of Global FailureWhat CIOs Should Do NowDPA and Regulatory ReactionsConclusion
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