Final answer:
The Statement of Work (SOW) is the document that outlines the detailed work, expectations, and terms of service to be provided by a vendor.
Step-by-step explanation:
The document that is a contract and defines the scope, quality, and terms of service to be provided by a vendor is the Statement of Work (SOW). Unlike a proposal, which describes what services will be provided and at what cost, the Statement of Work lays out the detailed work and expectations for a particular project or service contract.
It includes specific descriptions, timelines, deliverables, and other details that bind the vendor to a certain level of service. Additionally, it may include payment terms, as well as any provisions for change orders, which allow changes in the work scope during the project, as necessary.