AWS US-EAST-1 outage (October 2025)

A major Amazon Web Services disruption in the US-EAST-1 (Northern Virginia) region on 19 and 20 October 2025. According to Amazon's post-event summary, a latent race condition in DynamoDB's automated DNS management system, involving two independent DNS Enactor processes, left the regional DynamoDB endpoint with an empty DNS record. The failure spread to dependent services, including EC2 instance launches and Network Load Balancer health checks, and disrupted many websites and apps for most of a day, from 11:48 PM PDT on 19 October to 2:20 PM PDT on 20 October. Amazon disabled the DNS automation worldwide while it worked on fixes.

Text from OyList