Getting Started with VMware Fusion
With VMware Fusion™, you can run personal computer (PC) applications and devices on your Intel-based Mac. Designed for the Mac user, VMware Fusion takes advantage of the security, flexibility, and portability of virtual machines to run Windows and other x86 operating systems at the same time as Mac OS X.
Definition of a Virtual Machine
A virtual machine is a software file that behaves just as a physical computer does. A virtual machine contains a display, a hard disk, one or more processors, memory, and all the other hardware that goes into a typical physical machine, but all of the components are virtualized. That is, these elements of a virtual machine are all created by software and stored in files on your Mac.
The virtual machine runs in a window on your Mac. You install an operating system and applications in the virtual machine and operate it as you would a physical computer.
The Mac that you run a virtual machine on is called a host. In this context, the virtual machine is called a guest.