Utility computing can occur at different levels. From Software-as-a-Service (SaaS) paradigm, Desktop-as-a-Service (DaaS) paradigm can be derived: desktops can be transformed into a cost-effective, scalable and comfortable subscription service. In VDD, desktop virtual machines are instantiated on a server and then provided to clients as a whole, on demand, across a network.

Since the first release in 2007, new features have been implemented and performance improvements achieved. As virtualization holds a critical role in the system, development and tests have been done for implementing the best virtualization solution. Performance analysis showed results that encouraged to go on with the development and towards a real-life use. Operational costs analysis showed economic and ecological advantages too.

For these reasons, NLnet decided to sponsor and finance a new phase of the development. In this section, workplan and deliverables of the project are presented.