Virtual Desktop Infrastructure (VDI) also called application and desktop virtualization environments, allows anyone, employees or contractors, to have secure, on-demand access to their applications and desktops. Access is from any device (PCs, MACs, desktops, tablets or smartphones), anywhere (globally), anytime (24X7).
Efficient and cost effective delivery of VDI
While each vendor has specific key architectural components to implement application and desktop virtualization, common elements include: user devices, sometimes with a thin/headless client, a gateway, front-end servers, back-end servers and a directory service.
Some vendors consolidate multiple functions reducing the number of components through which traffic traverses. The thin/headless client functions as a beacon to allow connections between users and back-end servers. The gateway securely manages traffic to and from the user and the back-end servers. The front-end servers serve as an intermediary between the directory service, the gateway, and the back-end servers, resolving AAA and access to resources. The directory service provides AAA services. Finally, the back-end servers host the applications and desktops.