Definition
Cost represents the monetary expenditure required to complete project activities and deliver project outputs. It encompasses all resources consumed, including labor, materials, equipment, and overhead. In practice, cost management involves planning, estimating, budgeting, and controlling expenses to ensure the project stays within financial constraints. Understanding and managing cost is critical for project success, as exceeding budget can jeopardize project viability and stakeholder satisfaction. For instance, a construction project must meticulously track the cost of concrete, steel, and labor to avoid overspending. A common confusion arises with 'price,' which is what a customer pays, whereas cost is the internal expenditure incurred by the project team. Cost is a fundamental concept assessed on the PMP, CAPM, and PMI-ACP examinations.