What are the main advantages of using Terraform compared to Ansible?

The main advantages of Terraform compared to Ansible are related to their purpose and approach to infrastructure management:

• Declarative approach: Terraform describes the desired state of infrastructure in configuration files, and then brings the infrastructure to that state. Ansible is more often used for imperative configuration management.
• Infrastructure as Code (IaC) management: Terraform specializes in creating, changing, and deleting resources of cloud providers and other services, providing change tracking and rollback capabilities.
• Change planning (terraform plan): Terraform allows you to see what changes will be applied before executing them, reducing error risks.
• Multi-provider support: Terraform supports many cloud platforms and services via providers, simplifying multi-cloud management.

Ansible is more focused on configuring and managing the state of already deployed systems, installing packages, and setting up services.

Thus, Terraform is better suited for creating and managing infrastructure itself, while Ansible is for configuring and managing the state inside servers.