CACI International Inc, through its subsidiaries, engages in the provision of expertise and technology to enterprise and mission customers in support of national security in the intelligence, defense, and federal civilian sectors.

The company operates through two segments, Domestic Operations and International Operations.

The Domestic Operations segment offers digital solutions by modernizing enterprise and agency-unique applications, enterprise infrastructure, and business processes; C4ISR solutions, including command, control, communications, and computer (C4), as well as intelligence, surveillance, and reconnaissance (ISR) technology and networks; and cyber solutions for cybersecurity, cyberspace, electronic warfare, and signals intelligence operations.

This segment also provides space solutions, comprising intelligence fusion, data analytic, and decision support, as well as logistics solutions; engineering services, such as platform integration, modernization and sustainment, system engineering, naval architecture, training and simulation, and logistics engineering; design, implement, protect, and manage secure enterprise IT solutions for federal agencies; and mission support solutions, that include analytic services, as well as scenario-based instruction across the spectrum of intelligence processing, collection, and products.

The International Operations segment provides a range of IT services, proprietary data, and software products to the commercial and government customers in the United Kingdom, continental Europe, and internationally.

The company was founded in 1962 and is headquartered in Reston, Virginia.