Fun fact... HashiCorp actually got a patent around (part of) this https://patents.google.com/patent/US11347559B2/
https://github.com/aws-cloudformation/cloudformation-coverag...
Can't find a blog detailing exactly when it launched, but here's a file from an AWS SDK in 2011 with it:
https://github.com/aws/aws-sdk-java/blob/2b08c776c16fc1c8f58...