Co-founder of Porter (https://porter.run) here - we do not use Terraform under the hood. We moved away from an IaC based system earlier this year to better manage our users' infrastructure distributed across multiple cloud accounts. A decision that definitely turned out to be conveniently prescient :)
With this new system, we are also able to immediately reconcile drifts that occur in our user's infrastructure, which an IaC based system did not allow us to do.
With this new system, we are also able to immediately reconcile drifts that occur in our user's infrastructure, which an IaC based system did not allow us to do.