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In the ITIL model, a 'Service' is defined as, "A means of delivering value to customers by facilitating outcomes customers want to achieve without the ownership of specific costs and risks." [ 2 ] The meaning is thus highly business-focused and assumes some degree of outsourcing , although this may just be outsourcing from within the functional ...
ITIL 4 consists of 34 practices grouped into 3 categories: General management practices: some examples are: Strategy management, Portfolio management, Architecture management and Risk management; Service management practices: examples are: Service-level management, Availability management and Capacity and performance management
An IT service catalog is a subset of an enterprise service catalog and is defined by ITIL, by the book Service Design, to be an exhaustive list of IT-only services that an organization provides or offers to its employees or customers. The catalog is the only part of the Service Portfolio that is published to customers and is used to support the ...
[citation needed] At that time, ITIL lacked specific guidance for application design, development, maintenance and support. Newer ITIL versions, particularly V3, have increasingly addressed the Application Development and Application Management domains; the ASL BiSL Foundation has published a white paper comparing ITIL v3 and ASL. [1]
ISO/IEC 20000 is the international standard for IT service management.It was developed in 2005 by ISO/IEC JTC1/SC7 and revised in 2011 and 2018. [1] It was originally based on the earlier BS 15000 that was developed by BSI Group.
A service desk is a primary IT function within the discipline of IT service management (ITSM) as defined by ITIL. It is intended to provide a Single Point of Contact (SPOC) to meet the communication needs of both users and IT staff, [7] and also to satisfy both Customer and IT Provider objectives.
The Service Portfolio is described in the ITIL books Service Strategy and Service Design. [1] The Service Portfolio is the core repository for all information for all services in an organization. Each service is listed along with its current status and history. The main descriptor in the Service Portfolio is the Service Design Package (SDP). [2]
Because, contrary to the variations of the service level, the service level does not only reflect the stockout event but also the amount backordered, it is widely used in industrial practice. Also, by the definitions, comparing service levels we have α ≤ β {\displaystyle \alpha \leq \beta } whenever the probability of zero demand equals 0.
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