Definition
PERT, or Program Evaluation and Review Technique, is a statistical method used in project management to estimate task durations and identify critical paths. It helps in planning and controlling complex projects by analyzing the time required for each activity, considering optimistic, pessimistic, and most likely scenarios. PERT works by calculating an expected time for each task and then aggregating these times to forecast the overall project completion date. This technique is crucial for managing uncertainty and improving the reliability of project timelines, especially in large-scale endeavors. For instance, PERT can be used to schedule the development of a new software application, accounting for potential delays in coding or testing. It differs from critical path method (CPM) by incorporating probabilistic time estimates rather than deterministic ones. PERT concepts are frequently tested on PMP, CAPM, and PMI-ACP examinations.