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