SpendQueryBeta

FAR and DFARS › FAR Part 39: Acquisition of Information Technology

FAR 39.002 Definitions.

The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.

In plain English

This section defines two terms used in FAR Part 39: 'modular contracting' and 'national security system.' It matters to contractors because these definitions determine how the terms are understood when the part's rules apply to an acquisition.

Applies to: Acquisitions of information technology systems covered by FAR Part 39

Key terms: Modular contracting · National security system · Information technology systems · Interoperable increments

Written by AI from this section's text. A guide, not legal advice: the text below rules.

The text

As used in this part—

Modular contracting means use of one or more contracts to acquire information technology systems in successive, interoperable increments.

National security system means any telecommunications or information system operated by the United States Government, the function, operation, or use of which—

(1) Involves intelligence activities;

(2) Involves cryptologic activities related to national security;

(3) Involves command and control of military forces;

(4) Involves equipment that is an integral part of a weapon or weapons system; or

(5) Is critical to the direct fulfillment of military or intelligence missions. This does not include a system that is to be used for routine administrative and business applications, such as payroll, finance, logistics, and personnel management applications.

← 39.001 Applicability. · 39.101 Policy. →

Rule changes for FAR Part 39

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.

FAR 39.002 Definitions · SpendQuery