One Region Fails, Half of the Supply Chain Grinds to a Halt – Cloudmagazin

On 20 October 2025, part of the internet ground to a halt. Slack, Snapchat and Atlassian were unreachable for hours, online shops lost orders, and logistics services couldn’t process shipments. The trigger sat in a single AWS region on the US east coast. The outage exposes an uncomfortable truth: cloud concentration isn’t just an IT issue-it’s a supply-chain risk. Key Takeaways A single region is enough. The October 2025 AWS outage began with an empty DNS record in us-east-1 and took down Slack, Snapchat and thousands of online shops for more than 15 hours. Concentration is a supply-chain risk. Inventory management, shipment tracking and payment processing all run through the cloud. When the cloud stalls, so does the physical supply chain. Multi-cloud is rarely the answer. A second provider doubles complexity and cost, not resilience. For most mid-sized firms, a tested multi-region setup is the better first step. Related: Separating NIS2 and DORA: Compliance clusters in Kubernetes  /  Cloud backup with IaC: resilience instead of restore risk What happened in us-east-1 The outage started with a tiny error in the DNS management of the DynamoDB database service. A race condition produced an empty DNS record for the regional endpoint. Automation didn’t fix
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