Explained: The ‘basic software bug’ that caused Amazon Web Services outage, bringing half the internet across the world down

A subtle software flaw in Amazon’s core database system, DynamoDB, triggered a massive, hours-long outage affecting thousands of websites and apps. The bug, related to automated DNS management, caused a cascading failure across AWS infrastructure. Network Load Balancers also faltered, exacerbating the widespread disruption. Manual intervention was eventually required to restore services.