The correct answer is the Service-Level Agreement. A Service-Level Agreement is a formal document that outlines the expected level of service provided by a vendor, including measurable performance metrics like uptime and response times. Memoranda of Agreement and Memoranda of Understanding typically document more general cooperation or mutual intent between parties without delving into specific service metrics. A Master Service Agreement establishes a contractual framework that might not detail service metrics, which are often found in subsequent work orders or statements of work. A Non-Disclosure Agreement is focused on confidentiality of information and does not relate to service performance criteria. A Business Partners Agreement is similar in some respects but is not primarily concerned with specific service delivery metrics like response times or system availability.