ITIL: It provides guidance to an organization and individuals to use IT as a service to empower business change, transformation and improvement.

There are 4 dimensions of service managements

Organizations and People : Which type of resources provided to end user.

Information and Technology:It includes Data management, infrastructure (latest tools to support end user).

Partners and Suppliers:Which type of Services provided by other organizations. It helps to drive the value we hold.

Value streams and Processes:Requirement of new service and Type of processes we need to define to end user.

ITIL life cycle: there are 5 types

Service Strategy:how to design, develop, and implement IT Service Management

Service Design: how to design services and processes.

Service Transition:how to manage the transition of a new or changed service.

Service Operation:ensure that services are delivered and are running smoothly and reliably.

Continual Service Improvement:how to re-align IT services, as business needs change.