International Business Machines Corporation, abbreviated IBM, is a multinational computer, technology and IT consulting (Information technology consulting) corporation headquartered in Armonk (Armonk, New York), Town of North Castle (North Castle, New York), New York, United States. The company is one of the few information technology companies with a continuous history dating back to the 19th century. IBM manufactures and sells computer hardware (Personal computer hardware) and software (computer software) (with a focus on the latter), and offers infrastructure services, hosting services (Internet hosting service), and consulting services (consultant) in areas ranging from mainframe computers to nanotechnology. It has been nicknamed "Big Blue" for its official corporate color.

IBM has been well known through most of its recent history as the worlds largest computer company and systems integrator. With over 398,455 employees worldwide, IBM is the largest and most profitable information technology employer in the world. IBM holds more patents than any other U.S. based technology company and has eight research laboratories worldwide. The company has scientists, engineers, consultants, and sales professionals in over 170 countries. IBM employees have earned five Nobel Prizes, four Turing Awards, nine National Medals of Technology (National Medal of Technology), and five National Medals of Science (National Medal of Science). As a chip (Integrated circuit) maker, IBM has been among the Worldwide Top 20 Semiconductor Sales Leaders (Semiconductor sales leaders by year) in past years.