ITIL Dictionary of Terms

A - Z Dictionary of terms for ITIL. This is the official Dictionary of terms for ITIL, which is a set of practices for IT Service Management. ITIL® is a registered trade mark of AXELOS Limited. View the Agile Dictionary. Managing Successful Programmes (MSP) Dictionary. Project Office Dictionary (P30). Full PRINCE2 glossary of terms. See also Risk Management Dictionary and Project Management Dictionary.

A - acceptance to availability plan | B - back-out to business unit | C - call to customer-facing service | D - dashboard to driver | E - early life support (ELS) to external service provider | F - facilites management to functional escalation | G - H - gap analysis to hot standby | I - identity to ITIL | J - K - job description to known error record | L - lifecycle to live environment | M - maintainability to monitoring | N - near-shore to notional charging | O - objective to overhead | P - pain value analysis to PRojects IN Controlled Environments (PRINCE2) | Q - qualification to quick win | R - RACI to running costs | S - Sarbanes-Oxley (SOX) to system management | T - tactical to Type III service provider | U - underpinning contract (UC) to utility | V - validation to vulnerability | W - warm standby to workload

W - warm standby to workload

warm standby


(ITIL Service Strategy) Assurance that a product or service will meet agreed requirements. This may be a formal agreement such as a service level agreement or contract, or it may be a marketing message or brand image. Warranty refers to the ability of a service to be available when needed, to provide the required capacity, and to provide the required reliability in terms of continuity and security. Warranty can be summarized as 'how the service is delivered', and can be used to determine whether a service is 'fit for use'. The business value of an IT service is created by the combination of utility and warranty. See also service validation and testing.

work in progress (WIP)

A status that means activities have started but are not yet complete. It is commonly used as a status for incidents, problems, changes etc.

work instruction

A document containing detailed instructions that specify exactly what steps to follow to carry out an activity. A work instruction contains much more detail than a procedure and is only created if very detailed instructions are needed.

work order

A formal request to carry out a defined activity. Work orders are often used by change management and by release and deployment management to pass requests to technical management and application management functions.


(ITIL Service Operation) Reducing or eliminating the impact of an incident or problem for which a full resolution is not yet available – for example, by restarting a failed configuration item. Workarounds for problems are documented in known error records. Workarounds for incidents that do not have associated problem records are documented in the incident record.


The resources required to deliver an identifiable part of an IT service. Workloads may be categorized by users, groups of users, or functions within the IT service. This is used to assist in analysing and managing the capacity, performance and utilization of configuration items and IT services. The term is sometimes used as a synonym for throughput.

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