The Information Technology Infrastructure Library (ITIL) is a leading source of IT service management guidance. Millions of IT professionals are ITIL certified, many organizations and vendors have adopted ITIL and embedded it into their IT management software. In this course, David Pultorak introduces you to ITIL, covering the basics of both current versions of this popular approach to IT service management: ITIL® v3 and ITIL® 4. Starting with ITIL® v3—retired as a certification path in 2022 but still widely used—David explains the service lifecycle, processes and functions, and roles, technology, and automation. He then compares the major differences in ITIL® 4: the four dimensions, the service value system, the service value chain, and the guiding principles and practices. David also helps you learn the basics of ITIL® certification, including the ITIL® v3 and 4 certification schemes, and provides tips for passing the certification exam.