VMware is a company that specializes in virtualization software and services. Virtualization involves creating a virtual version of various resources such as computing power, storage, and networking, allowing organizations to run multiple operating systems and applications on a single physical machine. VMware's products enable businesses to optimize their IT infrastructure, improve efficiency, and reduce costs by consolidating hardware resources and streamlining management. They offer a range of solutions including virtualization software for servers, desktops, and cloud environments, as well as management tools for virtualized infrastructures.