Companies that stayed online during AWS us-east-1 outages already ran their critical services in a second region or a second cloud, moved traffic with a small, rehearsed step or automated health-checked routing, and kept us-east-1-only services out of their failover path. Multi-AZ inside us-east...
Source: [Dev.to](https://dev.to/noahcontrolplane/how-companies-stay-online-during-aws-us-east-1-outages-what-the-teams-that-stayed-up-did-3fl2)