The Virtual Private Cloud on-demand service offering is based on the “pay as you go” allocation model in vCloud Director. It gives subscribers instant, committed capacity on demand through access to a shared management control plane in a multi-tenant service environment. Resource commitments for CPU (GHz), memory (GB), and storage (GB) are committed only when virtual machines or vApps are instantiated within the target organization virtual data center in vCloud Director. This service is designed for quick-start pilot projects and test and development application workloads that do not typically require persistent resource commitments or upfront resource reservations.