A humorous jargon-free business explanation of ITIL cycles. ITIL® Explained Simply & Visually describes the five cycles in version 3 of the IT Infrastructure Library by comparing them to a restaurant chain. ITIL is the globally recognized collection of best practices for delivering great IT services. CompuCom has been helping our clients implement ITIL for more than 10 years. We are experts in transitioning companies to ITIL.