The Information Technology Infrastructure Library describes how organizations should organize information technology resources to deliver business value. It contains comprehensive guidelines for documenting the functions, roles and processes of information technology service management. The ITIL methodology provides practical frameworks that organizations in the information technology service industry use to plan, deliver and support IT functions.
The Information Technology Infrastructure Library methodology involves five core publications that enable organizations to deliver information technology services and meet business goals. The methodology defines the processes of problem, incident, change, configuration and release management. These publications map the ITIL service life cycle, which guides organizations from the initial stage of identifying customer needs to designing and implementing IT services. The ITIL service life cycle also guides organizations through monitoring and continual improvement phases.
The Information Technology Infrastructure Library methodology does not compel organizations to implement all the specifications outlined in its framework. Small and medium-sized businesses can adopt the most important features to achieve cost savings. Since ITIL is a model for IT service delivery, it does not require tools or projects for implementation. Organizations can implement the ITIL methodology in stages through a culture change initiative and the guidance of a strong executive sponsor.