AWS outage post-mortem fingers DNS as the culprit that took out a chunk of the internet and services for days — automation systems race and crash

The recent Amazon Web Services outage that took out a significant portion of the internet, games, and even smart home devices for days, was extensively covered in the news. Cloud services’ distributed architecture should protect customers from failures like this one, so what went wrong? Amazon published a detailed technical post-mortem of the failure, and as the famous haiku poem goes: “It’s not DNS. / There’s no way it’s DNS. / It was DNS.”

As a rough analogy, consider what happens when there’s a car…