Simple definition
An Ansible role organizes reusable tasks, variables, handlers, templates, and files for configuring a service.
Purpose and use
An Ansible role groups components for a reusable function, such as configuring a service.
How does it work?
Its structure organizes tasks, defaults, variables, handlers, files and templates, with optional dependencies.
Example and verification
Before reuse, check input parameters, compatible versions and behavior on an already configured machine.
Points to watch
A role obtained externally can perform privileged operations. Adoption requires reviewing its content and dependencies.
In short
Reuse works well when the role has a clear contract and tested behavior in the intended environments.