AWS US-EAST-1 Outage Knocked 3,500 Companies Offline Across 60 Countries

A DNS race condition in Amazon Web Services' US-EAST-1 region on 20 October 2025 triggered a 15-hour cascade that disrupted over 75 AWS services and affected more than 3,500 companies across 60 countries. The failure brought down major platforms including Snapchat and Fortnite, froze banking transactions, and even caused internet-dependent smart beds to malfunction with no manual override available. The outage exposed a critical structural vulnerability: US-EAST-1 functions as a global control plane for AWS, meaning organisations that had built infrastructure in other regions were still dependent on a single data centre in Northern Virginia. AWS, Microsoft Azure, and Google Cloud together control over 62 percent of the global cloud market, with an estimated 94 percent of enterprise services relying on at least one of the three. Industry data shows IT downtime now costs large enterprises an average of $23,750 per minute, with global losses across major companies estimated at $400 billion annually.