Founded in 1969, ICF International operates primarily in the United States, with additional offices internationally. The company's business spans several key domains: energy, environment, and disaster recovery; health and social programs; and security and other civilian initiatives. ICF assists clients with digital transformation, IT modernization, cybersecurity, and data analytics, while also guiding utilities and energy companies through decarbonization and energy efficiency programs. Government clients account for approximately three-quarters of its revenue, with the remainder generated from commercial sectors such as energy, aviation, and healthcare. The firm's competitive position is strengthened by its long-standing relationships with federal agencies and its ability to integrate specialized policy knowledge with large-scale program execution.