Terraform is an awesome user space tool. I've been using the CF custom resource to manage a ton of stuff (hundreds of clusters and thousands of apps) and it's

Terraform is an awesome user space tool. I've been using the CF custom resource to manage a ton of stuff (hundreds of clusters and thousands of apps) and it's excellent. It's amazing that the service supports custom anything, and the create, update delete pattern is perfect. Replacing a custom resource with the right resource can be challenging. My strategy is to not do it. Create all new stacks the new way and have good tools to migrate parameters and data from an old stack to a new stack.