TL;DR

On October 19, 2025, AWS went dark for over a day when a DNS hiccup in DynamoDB cascaded into EC2 and Network Load Balancer meltdowns. Ten days later, the official RCA confirmed that dropped DNS entries were the root cause.

The video walks you through the timeline—summary, how Dynamo lost its DNS, EC2 errors, NLB failures—and even drops links to deep-dive courses on Node.js, backend engineering, networking, databases and more.

Watch on YouTube