Explanation
Terraform Cloud's private module registry helps you share Terraform modules across your organization. It includes support for module versioning, a searchable and filterable list of available modules, and a configuration designer to help you build new workspaces faster.
By design, the private module registry works much like the public Terraform Registry. If you're already used the public registry, Terraform Cloud's registry will feel familiar.
Understand the different offerings in Terraform OS, Terraform Cloud and Terraform Enterprise. Terraform Cloud's private module registry helps you share Terraform modules across your organization.
https://www.terraform.io/docs/cloud/registry/index.html
https://www.terraform.io/docs/cloud/registry/publish.html

Using a tool like Terraform can be advantageous for organizations deploying workloads across multiple public and private cloud environments. Operations teams only need to learn a single tool, single language, and can use the same tooling to enable a DevOps-like experience and workflows.

The remote-exec provisioner invokes a script on a remote resource after it is created. Reference: https://www.terraform.io/docs/language/resources/provisioners/remote-exec.html

remote-exec Provisioner
Example usage
resource "aws_instance" "web" {
# ...
provisioner "remote-exec" {
inline = [
"puppet apply",
"consul join ${aws_instance.web.private_ip}",
]
}
}