Configuration management tools solve the same problem differently. The right choice depends on your team's existing skills, the scale of your estate, and how much you value agentless simplicity vs powerful abstraction.

• Ansible: agentless, YAML playbooks, low barrier to entry — ideal for teams new to config management or mixed OS estates
• Chef: Ruby DSL, agent-based, strong test kitchen integration — powerful for complex logic but high learning curve
• Puppet: declarative manifests, agent-based, mature enterprise support — good for large static estates with compliance requirements
• In practice: Ansible for ad-hoc operations and cloud provisioning post-Terraform; Puppet or Chef for ongoing drift enforcement on large server fleets
• Ansible Tower/AWX: adds scheduling, RBAC, and audit logging — essential for enterprise Ansible usage
• Hybrid approach is common: Terraform provisions the infrastructure, Ansible configures the OS and middleware