> <i>"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."</i><p>Background note to HN readers:<p>Almost <i>zero</i> 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.<p>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.