We now know that on October 19, 2025, AWS suffered a DNS outage that dragged on for over 24 hours. Ten days later, the official root-cause analysis revealed a cascading failure: DynamoDB lost its DNS entries, which triggered EC2 hiccups and ultimately knocked out the Network Load Balancers.
If you’re curious, the full RCA is on AWS’s site, and our friend Hussein’s deep-dive video breaks down each error phase. Plus, he’s sprinkled in links to courses on Node.js, NGINX, networking, databases and more—perfect if you’d rather train than just commiserate.
Watch on YouTube
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