You're a team of three engineers. One of you just broke staging by running a script manually. Nobody knows what the current state of infra actually is. IaC is the obvious fix — but Terraform, Pulumi, and Ansible all claim to solve this. Which one?
The short answer: they're not the same kind of tool, and the right choice depends on your team's profile more than the tools' feature lists.
What each tool actually does
It's worth being precise about categories because "IaC" gets used too loosely:
Terraform (HashiCorp, now BSL licensed): declarative, state-file-based cloud provisioning. You describe desired state; Terraform computes the diff and applies it.
