Terraform maker's programs are ideal fit for Big Blue, but why splash out when the software's free and open? - In some ways, IBM paying a cool $6.4 billion for HashiCorp makes perfect sense. HashiCorp's infrastructure-as-code (IaC) tool Terraform is very popular and would work well with Red Hat Ansible. And, yes, I've heard the joke about how if you put them together, you'd get "Terrible."