ICSI is a Managed IT Services and Consulting firm based in Annapolis, Maryland, that was founded in 1987. We serve the cities of Annapolis, Arlington, Alexandria, Baltimore, Beltsville, Bethesda, Bowie, Catonsville, Clinton, College Park, Columbia, Falls Church, Fairfax, Frederick, Greenbelt, Hyattsville, McLean, Reston, Rockville, and Silver Spring in Maryland, Northern Virginia, and Washington, DC. Medical practices, non-profit organizations, real estate offices, construction firms, consulting agencies, and engineering groups are among the industries we serve in Maryland, Virginia, and Washington, DC.