Simple definition
ITIL is a framework of practices for managing IT services, focusing on value delivery, continual improvement, and service quality.
Purpose and use
ITIL, historically Information Technology Infrastructure Library, is a service-management practice framework for organizing value creation and delivery with users and partners.
How does it work?
It supplies vocabulary and practices that organizations adapt to their services, responsibilities and improvement needs.
Example and verification
For useful adoption, begin with an observable service problem and intended improvements rather than merely introducing forms.
Points to watch
ITIL is neither software nor a universal procedure to copy wholesale. Implementation depends on context and the framework version used.
In short
The approach should improve services and collaboration through proportionate, monitored and adjustable practices.