To support a holistic approach to service management, ITIL defines 4 dimensions that collectively are critical to the effective and efficient facilitation of value for customers and other stakeholders in the form of products and services. These are:
These four dimensions represent perspectives which are relevant to the whole SVS (Service Value System), including the entirety of the service value chain and all ITIL practices. The four dimensions are constrained or influenced by several external factors that are often beyond the control of the SVS.
Failing to address all four dimensions properly may result in services becoming undeliverable, or not meeting expectations of quality or efficiency. The four dimensions of service management apply to all services being managed, as well as to the SVS in general. It is therefore essential that these perspectives should be considered for every service, and that each one should be addressed when managing and improving the SVS at all levels.
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