A copy of the project schedule for a particular time (usually before the project is started) that can be used for comparison with the current schedule.
A formally approved version of the project schedule and/or budget that is used as the benchmark for comparing future progress as the project is completed.
A baseline cannot be changed without going through a change approval process.
Usually used with a a modifier (e.g. cost baseline, schedule baseline, performance measurement baseline).
A copy of project information prior to updating a project with progress.
When a baseline is created, current schedule values are copied into their relative baseline ones:
• Tasks (start and finish dates, duration, work, cost, splits). • Resources (work, cost). • Assignments (start and finish dates, work, cost). • Timephased work and cost for tasks, resources and assignments.
This provides a clear comparison about the status of the project; if it is meeting its baseline or not.
Created with the command: Tools..Tracking..Save Baseline.
Interim baselines can also be created to assist in what-if? scenarios.
SOURCE: microsoft project glossary-projectlearning.net