RESTON, Va.--(BUSINESS WIRE)--Science Applications International Corp. (NYSE: SAIC) announced today that Gartner's new Market Share report on IT services ranked the company as the #1 provider by revenue of IT services to the U.S. government in two categories; infrastructure implementation and managed services, and application managed services. This is the second consecutive year the company was ranked #1 for application managed services. Additionally Gartner's report also ranked SAIC as the #2