IBM's global corporate headquarters is located in Armonk, New York. Armonk is a hamlet in the town of North Castle, in Westchester County, rather than an incorporated city. IBM's headquarters complex is commonly associated with the name IBM, a company whose origins trace back to the Computing-Tabulating-Recording Company.
IBM moved its headquarters from Manhattan to Armonk in 1964. The site, known as IBM Somers Office Complex in some references, has long served as the company's central administrative base. IBM's major research, sales, and technology operations are distributed across many countries, so the Armonk location should not be confused with its largest research laboratories or regional offices.
The company was renamed International Business Machines in 1924. Its best-known historical businesses included tabulating equipment, mainframe computers, and enterprise software and services. IBM's headquarters location remains a useful distinction from its historic New York City presence and from facilities such as its Thomas J. Watson Research Center.