# Project files

| Topic | Meaning |
| --- | --- |
| [project](project/) | project files and directories |
| [inventory](inventory/) | hosts and groups |
| [pipeline](pipeline/) | ordered stages that apply steps to hosts |
| [recipe](recipe/) | reusable groups of steps |
| [step](step/) | keys that every step has |
| [handlers](handlers/) | steps that run after a change |