TL;DR
On October 19, 2025 AWS went dark for over 24 hours thanks to a massive DNS failure—after ten days, the official root-cause analysis finally spilled the beans. It all kicked off when Dynamo mysteriously lost its DNS entries, which then cascaded into a flood of EC2 errors and Network Load Balancer failures.
If you’re curious about the nitty-gritty, AWS’s full RCA dives into each stage: how Dynamo’s DNS tables got corrupted, why EC2 instances couldn’t register, and what broke in the load balancers.
Watch on YouTube
Top comments (0)