When an instance is "degraded", they need to start another instance quickly, or else the apps hosted on that instance will be down for good. So it's an emergen

When an instance is "degraded", they need to start another instance quickly, or else the apps hosted on that instance will be down for good. So it's an emergency. I think they don't have enough confidence in their detection of "degraded" instances to do it automatically, so it requires human intervention.