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ITIL Processes Modeling Guidelines

ITIL (Information Technology Infrastructure Library) recognizes key disciplines in IT Service Management, including business perspective, service management, support and delivery, Information and Communication Technology (ICT) infrastructure management, and application management.

• The IT operation needs to understand the Business Perspective, so that appropriate services (Service Management) that align with business needs can be provided.
• The services are then constructed with an operational management component which generally has little from direct contact with clients (Service Delivery) and a Support function.
• IT Applications are created (or purchased and then implemented) and maintained.
• All of this runs on the ICT Infrastructure.
• Management of IT Security and providing appropriate systems access overlaps most of the other disciplines.