How to use Terraform in a cloud agnostic way

Question

I have seen many examples on how to use Terraform to launch AWS resources. I have also seen many claims that Terraform is cloud agnostic.

What I have not seen is an

Answer 1

You cannot do that.

Terraform can be used to create resources in multiple cloud providers in a single terraform apply command.

But you will need separate resources config for different cloud providers.

For example you can create a terraform config file and declare aws_instance and azurerm_virtual_machine resources to create resources in both aws and azure.