IBM has a long history dating back to 1911 and has transformed over the decades from a producer of tabulating machines and services into a global technology services and software company led by executives like Thomas Watson Sr., Lou Gerstner, and Sam Palmisano who implemented strategies shifting IBM away from hardware and towards higher value services and solutions. Under Gerstner and Palmisano, IBM divested low-value assets and acquired numerous software companies to build a portfolio focused on infrastructure, integration, and innovation to become a globally integrated enterprise.