Cloud Outage Response: Lessons From July's Bad Week
In a single week, two of the largest cloud providers on earth failed at almost the same time, and a good chunk of the internet went with them. Effective cloud outage response stopped being a theoretical exercise and became the difference between a calm 30 minutes and a chaotic afternoon for thousands of on-call engineers. On July 23, 2026, a maintenance bug inside Microsoft Azure pulled IP routes off more devices than intended in the West US region, cutting Microsoft 365 access for millions.