It also acts as the de-facto authentication provider for a ton of third-party hosted services. I don't know if "login with github" stopped working during this

It also acts as the de-facto authentication provider for a ton of third-party hosted services. I don't know if "login with github" stopped working during this outage but I can imagine the sort of hell if I suddenly couldn't access my PaaS running production infrastructure because it couldn't authenticate my github account.