> "When one or more of these breakers tripped, a cascading failure of the remaining active CSB boards resulted, thus causing a total loss of power serving Cloud

> "When one or more of these breakers tripped, a cascading failure of the remaining active CSB boards resulted, thus causing a total loss of power serving Cloudflare’s cage and others on the shared infrastructure." Background note to HN readers: Almost zero SaaS providers (or even CDNs) using the term "our datacenter" or showing their datacenters on maps etc. have their own datacenters. It's universal and normal. In general they have a server, a rack, a cage, in shared space, subject to others' policies and practices, and their neighbors. This can adjust your mental model for accountability and your designs for resilience. You can even exploit this by colo-ing at the same addresses to get LAN latencies to your SaaS provider, CDN, or (sometimes) even cloud provider.