A baseline is a snapshot of the original project plan that you preserve for later comparison with the current plan. You can baseline to evaluate a project and compare it to an approved plan. Baselining preserves a version of the plan that does not change as work on the project progresses, unless you baseline the project again.
You can baseline a task, a selected range of tasks, all tasks in a view, or the entire project. When you create a baseline, you preserve information such as start dates, finish dates, and usage from that moment in time. You can then compare the current plan with the baseline plan to determine if the project is proceeding as expected.
The appropriate time for you to baseline a task or resource assignment data is after management approves the project plan and before the task starts and actuals are tracked. This gives you a reference against which to measure the project progress. If the plan goes through several review cycles, and management approves a new basis for measurement, you can rebaseline the task so that you can compare the revisions with the original plan.
Open Workbench supports multiple baselines so you can create new baselines as the project progresses.
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