Jacquard loom!
Yes, and early core memory was also woven by hand. I am not sure if this was just for core rope memory, or if it was more widespread than that.
Terraform has the ability to work with remote tfstate files, reference resources in other tfstate files via terraform_remote_state and unique instances can be labelled via a tfvar ID as a pre/post fix. Is this a polished wrapper around those mechanisms, or is there more going on as well?