What is CPM and PERT ? Explain its difference

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Accepted Answer

CPM and PERT are project management techniques used to plan, schedule, and control large projects.

CPM stands for Critical Path Method, which focuses on identifying the longest sequence of dependent activities to determine the minimum time needed to complete a project.
PERT stands for Program Evaluation and Review Technique, which uses three time estimates for each activity to calculate a more realistic project timeline.
CPM uses a single time estimate for each activity, while PERT uses three time estimates (optimistic, pessimistic, and most likely) to account for uncertainty.
CPM is more deterministic and suitable for projects with well-defined activities and durations, while PERT is more probabilistic and suitable for projects with high uncertainty and risk.
CPM is better for projects where time is the main constraint, while PERT is better for projects where resources are limited or uncertain.

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