A defense industrial base (DIB; also sometimes referred to as a defense industrial and technological base) is the network of organizations, facilities, and resources that provides a government with materials, products, and services for defense purposes (especially the supply of its armed forces). It may include both public and private actors, including some entities that may not exclusively engage in defense-related production, and is often defined in geographical or national terms (e.g., the U.S. or Chinese defense industrial bases). It may also be divided according to the kinds of weapons and equipment produced (one may speak of a "submarine industrial base," for instance, or a "rotary-wing aircraft industrial base," etc.).[1]
As a concept, the DIB is closely related to the notion of the military-industrial complex, and is often discussed as a foundational element of national power.