41 U.S.C. § 109: Major system

In this subtitle, the term “major system” means a combination of elements that will function together to produce the capabilities required to fulfill a mission need. These elements may include hardware, equipment, software, or a combination of hardware, equipment, and software, but do not include construction or other improvements to real property. the Department of Defense is responsible for the system and the total expenditures for research, development, testing, and evaluation for the system are estimated to exceed $75,000,000 (based on fiscal year 1980 constant dollars) or the eventual total expenditure for procurement exceeds $300,000,000 (based on fiscal year 1980 constant dollars); a civilian agency is responsible for the system and total expenditures for the system are estimated to exceed the greater of $750,000 (based on fiscal year 1980 constant dollars) or the dollar threshold for a major system established by the agency pursuant to Office of Management and Budget (OMB) Circular A–109, entitled “Major Systems Acquisitions”; or the head of the agency responsible for the system designates the system a major system.