Baseline (ITILv3):    [Continual Service Improvement] A Benchmark used as a reference point.

For example:

Baseline (ITILv2):    A snapshot of the state of a Configuration Item (CI) or set of CIs frozen at a point in time for a particular purpose. A baseline will often be recorded to ensure that the infrastructure can be restored to a trusted state should a Change fail or the CI need to be re-built. A baseline will also be established for the roll out of new CIs and for use in a disaster recovery situation.

Although a position, such as that described in a project plan that may be updated later, the baseline remains unchanged and available as a reference of the original state and as a comparison against the current position.

See also: Configuration Management

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