> Seems to me like the question of CloudFormation vs. Terraform has more to do with whether the business makes a strategic decision to allow for vendor lock-in

> Seems to me like the question of CloudFormation vs. Terraform has more to do with whether the business makes a strategic decision to allow for vendor lock-in or not, rather than mostly aesthetic discussions over the merits of YAML vs HCL. While I agree that CloudFormation is a vendor-specific tool which makes Terraform the obvious choice to avoid vendor lock-in more generally, in this particular case, the author is fully entrenched in the AWS ecosystem without any hint of desire to avoid lock-in, and gave as reason #1 for his decision a mostly aesthetic discussion over the merits of YAML vs HCL.