Which feature is available only in Terraform Enterprise or Cloud workspaces?

Secure variable storage is a feature that is available only in Terraform Enterprise or Cloud workspaces. This feature allows users to securely store sensitive information, such as API keys or passwords, ensuring they are not exposed in version control or logs. In Terraform Enterprise or Cloud, variables can be marked as sensitive, and they will be encrypted and stored securely.

This capability enhances security practices by managing sensitive data separately from the configuration code, providing better control over who has access to such information. It also facilitates compliance with best practices around secrets management. While the other options are features available in both open-source Terraform and Terraform Enterprise or Cloud, secure variable storage is specifically designed to address the security needs within managed environments, making it a distinguishing feature of Terraform Enterprise or Cloud workspaces.