ITIL

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Stands for Information Technology Infrastructure Library. ITIL is a set of recommended procedures and guidelines organizations should follow when using or delivering information technology (IT) services. It provides an organized approach to managing IT services, which is designed to benefit both companies and clients.
The five primary stages of the ITIL service lifecycle are listed below.
Businesses and organizations are not required to follow the practices outlined by ITIL. However, the recommendations can be helpful to any organization looking to offer or implement an IT-related service. AXELOS, which maintains the ITIL best practices, provides ITIL certifications to individuals who have developed a comprehensive understanding of ITIL.