48 CFR § 37.102 - Policy.
(a) Performance-based acquisition (see Subpart 37.6) is the preferred method for acquiring services (Public Law 106-398, section 821). When acquiring services, including those acquired under supply contracts or orders, agencies must -
(1) Use performance-based acquisition methods to the maximum extent practicable, except for -
(i) Architect-engineer services acquired in accordance with 40 U.S.C. 1101 et seq. (see part 36);
(ii) Construction (see part 36);
(iii) Utility services (see part 41); or
(iv) Services that are incidental to supply purchases; and
(2) Use the following order of precedence (Public Law 106-398, section 821(a));
(i) A firm-fixed price performance-based contract or task order.
(ii) A performance-based contract or task order that is not firm-fixed price.
(iii) A contract or task order that is not performance-based.
(b) Agencies shall generally rely on the private sector for commercial services (see OMB Circular No. A-76, Performance of Commercial Activities and subpart 7.3).
(c) Agencies shall not award a contract for the performance of an inherently governmental function (see subpart 7.5).
(d) Non-personal service contracts are proper under general contracting authority.
(e) Agency program officials are responsible for accurately describing the need to be filled, or problem to be resolved, through service contracting in a manner that ensures full understanding and responsive performance by contractors and, in so doing, should obtain assistance from contracting officials, as needed. To the maximum extent practicable, the program officials shall describe the need to be filled using performance-based acquisition methods.
(f) Agencies shall establish effective management practices in accordance with Office of Federal Procurement Policy (OFPP) Policy Letter 93-1, Management Oversight of Service Contracting, to prevent fraud, waste, and abuse in service contracting.
(g) Services are to be obtained in the most cost-effective manner, without barriers to full and open competition, and free of any potential conflicts of interest.
(h) Agencies shall ensure that sufficiently trained and experienced officials are available within the agency to manage and oversee the contract administration function.
(i) Agencies shall ensure that service contracts that require the delivery, use, or furnishing of products are consistent with part 23.
(j) Except for DoD, see 15.101-2(d) for limitations on the use of the lowest price technically acceptable source selection process to acquire certain services.