I have no doubt the people at Github have spent a lot of time thinking about multi-region failover. You never hear about the successful failovers --- only the ones which cause outages. To quote a famous US politician: &quot;There are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns – the ones we don&#x27;t know we don&#x27;t know.&quot;<p>You can&#x27;t failover things you didn&#x27;t predict.