It’s a virtualization technology that allows servershosting many virtual end-user machines on a host server.
The main purpose of VDI is to grant a comprehensive desktop environment management system for the user, to which they can connect to from a different end-user device.
Simplified: Thanks to desktop virtualization any user can connect to their PC environment from any device, no matter where they are located (pending access right given by the system and security administrators). This way, users don't always have to be in the office in order to get their work done.
Desktop virtualization addresses the following problems:
Software updates configuration
When your organization has many workstations, performing a software update can be very challenging. If you have 50 workstations you would have to perform 50 updates! With desktop virtualization, updating the centralized server will suffice.
Sometimes, a user’s computer fails, and has to be replaced.
With VDI, you won't have to rebuild the user's profile after replacing the computer, since the desktop environment is already stored on the main server.
Time consuming synchronization between desktop and laptop
Let’s say a user has a laptop in addition to a desktop computer. With VDI, he / she doesn't have to make a special effort to synchronize the data between the devices.
Incompatibility between devices with different platforms
A person might have a Mac at work, a Windows laptop at home, and an Android tablet for the road. Without VDI the user can’t run access and use the same software on all three.
Loss of productivity when it’s impossible to reach the office
When a user needs to work outside the office, the inability to reach their desktop, reduces efficiency. Having VDI, makes the office desktop accessible from anywhere, therefore it solves the problem.