Which Terraform Workflow involves a backend configured to use Terraform Cloud and pull requests for changes?

The Team Workflow in Terraform is designed for scenarios where multiple team members collaborate on infrastructure as code projects. This workflow is optimized for collaboration, allowing team members to work together efficiently on code changes without conflicts.

Using Terraform Cloud as a backend brings several advantages to the Team Workflow. It centralizes state management, provides access to shared infrastructure resources, ensures version control, and integrates with continuous integration/continuous deployment (CI/CD) pipelines. This setup enhances team collaboration by allowing changes to be tracked through pull requests, which are essential for code review processes. Pull requests facilitate discussions and feedback among team members before changes are merged, ensuring that infrastructure updates are deliberate and reviewed.

In contrast, other workflows, such as the Individual Practitioner Workflow, focus on personal projects where central coordination and collaboration are less critical. The Collaborative Workflow, while also centered on teamwork, does not emphasize the specific integration with pull requests in the same structured manner as the Team Workflow does. The Core Workflow Enhanced option is more general and does not explicitly address the pull request mechanism within the context of a centralized backend like Terraform Cloud.

The emphasis on using a backend for state management and the structured use of pull requests makes the Team Workflow the most appropriate answer for this scenario.