Leidos Holdings provides technology and engineering services primarily to U.S. government agencies, including defense, intelligence and civilian government clients, working on projects spanning information technology, cybersecurity and systems engineering. Its business model centers on government contracts, often multi-year agreements that provide a fairly predictable revenue base tied to government agency budgets and program funding rather than commercial market demand. Leidos has grown partly through acquisitions of other government services and technology companies, expanding its capabilities and government client relationships across defense, intelligence and civilian agency work. The company's revenue is tied closely to federal government spending priorities and budget cycles, particularly in defense and intelligence technology programs, along with the broader trend of government agencies outsourcing technology and engineering work to contractors rather than building all capabilities in-house.