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Hussein Nasser: We now know why the DNS failed

TL;DR On October 19, 2025, AWS hit a day-long DNS meltdown. Ten days later their root cause analysis pointed to a chain reaction: a DynamoDB DNS misconfiguration, cascading EC2 hiccups and an overloaded Network Load Balancer.

The video breaks it down in under 20 minutes (0:00 summary, 5:30 Dynamo DNS disaster, 13:41 EC2 errors, 16:16 NLB meltdown) and links to the full AWS RCA if you want all the gritty details.

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