ITIL Gartner
The IT Service Delivery group supports the planning and delivery of IT services and consists of Service Level, Availability, Capacity, IT Service Continuity and Financial Management processes. The Information Technology Infrastructure Library (ITIL) is a set of concepts and techniques for managing information technology (IT) infrastructure, development, and operations.
Release Management is used for platform-independent and automated distribution of software and hardware, including license controls across the entire IT infrastructure. ITSM is about delivering information technology as a set of services to the business customer. ITIL Gartner Nolan work, Managing the Data Resource Function which may be the earliest known systematic English-language treatment of the topic of large scale IT management (as opposed to technological implementation).
These disciplines are less well understood than those of Service Management and therefore often some of their content is believed to be covered ‘by implication’ in Service Management disciplines. IT Service Management is frequently cited as a primary enabler of IT Governance (or Information Management) objectives.
Service Level Management ensures that arrangements are in place with internal IT Support Providers and external suppliers in the form of Operational Level Agreements (OLAs) and Underpinning Contracts (UCs).