> Existing instances and networks continue to work normally. This suggests that one can minimize certain failure modes by making the configuration as static as

> Existing instances and networks continue to work normally. This suggests that one can minimize certain failure modes by making the configuration as static as possible, i.e. creating a fixed number of long-running instances. But then, using immutable, ephemeral instances can make for a more resilient system when the EC2 control plane is working normally. There are always tradeoffs.