Orient yourself to the weatherboards you'll be working with: the board you're replacing, the board immediately above it and the one immediately below it. Call the board above the one you're replacing board A.. Board B is the board that you're replacing.
Desktop virtualization is the concept of separating the logical desktop from the physical machine. One form of desktop virtualization, virtual desktop infrastructure (VDI), can be thought of as a more advanced form of hardware virtualization.
In computing, virtualization means to create a virtual version of a device or resource, such as a server, storage device, network or even an operating system where the framework divides the resource into one or more execution environments.