Information Technology Infrastructure Library
The Information Technology Infrastructure Library (ITIL) is a set of practices for IT service management (ITSM) that focuses on aligning IT services with the needs of business. In its current form (known as ITIL 2011 edition), ITIL is published in a series of five core publications, each of which covers an ITSM lifecycle stage. ITIL underpins ISO/IEC 20000 (previously BS15000), the International Service Management Standard for IT service management, although differences between the two frameworks do exist.
ITIL describes processes, procedures, tasks and checklists that are not organization-specific, used by an organization for establishing integration with the organization's strategy, delivering value and maintaining a minimum level of competency. It allows the organization to establish a baseline from which it can plan, implement, and measure. It is used to demonstrate compliance and to measure improvement.
ITIL是用來管理信息技術 (IT) 的架構設計，研發和操作的一整套概念和思想。
主要精神為和諧推動及持續改善，將服務對象視為客戶，強調End-to-End的服務。
ITIL最初是藉由一套書籍發布。這套書籍的每一本都涵蓋一個信息技術的領域。ITIL這個名稱和IT Infrastructure Library都是英國政府商務辦公室 (OGC)的註冊商標。藉由為不同的IT組織量身定製一些複雜的清單，任務，流程，ITIL為許多重要的IT時間準則給出了詳盡的解釋。
