Comment by viraptor
7 years ago
It has to be online. And reliable. And you can run into rate-limiting. And you have to be online. And services using it need extra network configuration to allow access. And if you can't narrow it down to a single ip/block you have a service with full network access just to reach out to a KMS.
KMS historical downtime is pretty great, rate limits have been bumped quite a bit to the point where I seriously doubt you're hitting them for secrets management, I'm not sure you can do a lot of useful things with most secrets while you're offline, KMS has a VPC endpoint and an Internet endpoint, so you can do both variants of the tight network scoping you want.
(And, again, age once that's around :-))