[DVassallo]

Because I worked at AWS for the last 8 years :)

Tbh, I don’t think it’s prohibited, but CloudFormation was the default choice.

[sieabahlpark]

You probably would have run into security issues with using terraform as each version would have to be vetted and any extensions you use

[captn3m0]

The Terraform AWS providers are maintained by AWS engineers, but the rest of the code will still need vetting.