VMware vCloud® is a VMware® cloud solution built on VMware technologies and solutions to deliver cloud computing. Cloud computing is a new approach to computing that leverages the efficient pooling of on-demand, self-managed virtual infrastructure to provide resources consumable as a service.
A simple cloud architecture might contain a VMware® vCloud Director® server group comprising multiple servers. Each server can run a collection of services called a vCloud Director cell.
Each vCloud Director server group requires at least one VMware® vCenter ServerTM system, a VMware vCloud® Networking and SecurityTM server, and one or more VMware® ESX® or VMware® ESXiTM hosts. For each vCenter Server system managed by vCloud Director, there must be one vCloud Networking and Security server.
All vCloud Director servers in the group share a single vCloud Director database. The group connects to one or more vCenter Server systems and the ESX or ESXi hosts that they manage. One vCloud Networking and Security server is needed for each vCenter Server system. vCloud Networking and Security servers provide network security services and automatically deploy VMware® vShield EdgeTM virtual appliances on demand from vCloud Director.