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Ansible is an open-source automation framework that uses YAML playbooks to define automation tasks. It is agentless — it connects to devices over SSH or APIs without requiring any software to be installed on the managed devices. This makes it ideal for network automation, where you cannot install agents on routers and switches.
| Feature | Benefit for Network Engineers |
|---|---|
| Agentless | No software to install on network devices |
| YAML-based | Human-readable, no programming required |
| Idempotent | Safe to run repeatedly without side effects |
| Multi-vendor | Modules for Cisco, Arista, Juniper, Palo Alto, and more |
| Community | Thousands of modules and roles on Ansible Galaxy |
| Extensible | Write custom modules in Python |
| Version control | Playbooks stored in Git like any other code |
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