Cloudflare Outage: Traffic Surge Disrupts AWS us-east-1 in 2025

On August 21, 2025, Cloudflare experienced a major network disruption from a surge in legitimate traffic to AWS's us-east-1 region, causing congestion, latency, and errors for customers. Engineers rerouted traffic to mitigate it. The incident highlights vulnerabilities in cloud interconnects, prompting Cloudflare to upgrade bandwidth and monitoring for better resilience.