TL;DR
Back on October 19, 2025, AWS hit a massive DNS outage that kept services offline for over a day. Ten days later they dropped the official RCA, revealing how a glitch in Dynamo’s DNS cascadingly tripped up EC2 and Network Load Balancers, plus a neat video breakdown with timestamps for each failure mode.
Beyond the outage deep-dive, the page is basically a hub of Hussein’s backend courses, from OS fundamentals and Node.js internals to networking, databases and more—plus links to his YouTube membership, Medium, podcasts, and “buy me a coffee” if you’re feeling generous.
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