Ansible and Terraform are both tools that can be used to automate infrastructure provisioning and management, but they have different approaches and use cases.

Ansible is a configuration management tool that is used to automate the deployment and configuration of software on servers. It uses an "agentless" architecture, which means it doesn't require any software to be installed on the target servers. Instead, it uses SSH to connect to the servers and runs commands to configure them. Ansible is primarily used for software configuration and management and is often used in conjunction with other tools like Terraform.

Terraform, on the other hand, is an infrastructure as code tool that is used to provision and manage infrastructure resources, such as virtual machines, networks, and storage. Terraform can be used to manage resources across multiple cloud providers, as well as on-premises environments. It uses a declarative syntax to define the desired state of the infrastructure, and then uses that definition to create, update, or destroy resources as needed.

In summary, Ansible is more focused on software configuration management while Terraform is more focused on provisioning and managing infrastructure.