Earlier quoted context omitted.
Thanks all. I'll add it to my ToDo list for checking out. :) --- Actually, on second thought it sounds like the platform they're built on top of (Terraform) is now undergoing some fundamental business model changes. Probably best to see how that plays out first. :/
It is not powered by Terraform AFAIK
Maybe not all their providers utilize Terraform, but it was definitely how their product started out. When you run Pulimi using their AWS provider and get errors at runtime, some of those are verbatim Terraform errors.
Their docs and site is very clear to muddle this connection but if you ever used their API, you'd know this.