ITIL v3 (Information Technology Infrastructure Library version 3) was a widely adopted framework for IT service management (ITSM). It provided a structured approach to managing IT services throughout their lifecycle, focusing on aligning IT with business needs. ITIL v3 outlined five core publications covering service strategy, service design, service transition, service operation, and continual service improvement. While superseded by ITIL 4, ITIL v3 concepts still influence many IT organizations. ITIL v3 is commonly used to improve service quality, reduce IT costs, and enhance customer satisfaction through standardized processes and best practices.
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