48 CFR § 42.1501 - General.
(a) Past performance information (including the ratings and supporting narratives) is relevant information, for future source selection purposes, regarding a contractor's actions under previously awarded contracts or orders. It includes, for example, the contractor's record of -
(1) Conforming to requirements and to standards of good workmanship;
(2) Forecasting and controlling costs;
(3) Adherence to schedules, including the administrative aspects of performance;
(4) Reasonable and cooperative behavior and commitment to customer satisfaction;
(5) Reporting into databases (see subpart 4.14, and reporting requirements in the solicitation provisions and clauses referenced in 9.104-7);
(6) Integrity and business ethics; and
(7) Business-like concern for the interest of the customer.
(b) Agencies shall monitor their compliance with the past performance evaluation requirements (see 42.1502), and use the Contractor Performance Assessment Reporting System (CPARS) metric tools to measure the quality and timely reporting of past performance information. CPARS is the official source for past performance information.