A Performance Work Statement (PWS) is a document used in the US federal government procurement process that outlines the specific requirements, tasks, and objectives that a contractor must meet to fulfill a contract. It acts as a detailed description of the work to be performed and the services to be delivered, and is used as a basis for evaluating the contractor's performance. The PWS typically includes information such as the scope of work, deliverables, performance standards, and any special requirements. It serves as a blueprint for both the government and the contractor to ensure that the final product meets the specified requirements and expectations. The PWS is an important tool for ensuring that all parties involved have a clear understanding of the project and its objectives, and can help to minimize misunderstandings and conflicts throughout the project lifecycle.