Amazon Uncovers Root Cause of Major AWS Outage That Brokes The Internet
Amazon Web Services (AWS) experienced a significant outage on October 19-20, 2025, affecting multiple services and causing widespread operational disruptions.
Amazon Web Services (AWS) experienced a significant outage on October 19-20, 2025, affecting multiple services and causing widespread operational disruptions.
The incident began at 11:49 PM PDT on October 19, with AWS reporting increased error rates across several services in the US-EAST-1 region. This led to failures impacting Amazon.com, its subsidiaries, and AWS support teams.
Customers encountered errors when attempting to shop, stream, or access cloud resources, with some services becoming completely unavailable.
AWS engineers identified DNS resolution issues as the root cause of the problem, specifically affecting the regional endpoints for DynamoDB. By 12:26 AM PDT on October 20, fixes were implemented, restoring DynamoDB functionality by 2:24 AM PDT.
The incident began at 11:49 PM PDT on October 19, with AWS reporting increased error rates across several services in the US-EAST-1 region.
The outage also affected internal subsystems, necessitating temporary restrictions on launching new EC2 virtual machines to maintain stability. By 12:28 PM PDT, most services showed substantial improvement, and normal operations resumed by 3:01 PM PDT.
AWS released a detailed post-incident report, emphasizing the outage's scope and the steps taken for recovery. The event highlighted the importance of robust DNS configurations and the need for diversified infrastructure and failover mechanisms.
Users are advised to monitor the AWS Health Dashboard for ongoing updates and refer to the comprehensive summary available on the AWS website.
Based on reporting by Cyber Security News.
