VMware vCloud Director (vCD) is a software solution that enables enterprises to build secure, multi-tenant private clouds by pooling infrastructure resources into virtual datacenters and presenting them to users through Web-based portals.
Key Features
- Create virtual datacenters
- Support multi-tenant environments
- Self Service Portals
- vSheild Security
- vCloud API and Automation
Basically sits on top of vCenter/ESX(i) and offers self service portals useful for multi-tenant environments.
Product Site
http://www.vmware.com/products/vcloud-director/
Will post more info on this later. Do ask if you have any questions..