You are not going to make your enterprise hardware cheaper than the big boys operating in the Infrastructure as a Service (IaaS) space. This means the real place of innovation and growth is in Platform as a Service to take advantage of this new commodity-like infrastructure by building private infrastructure to work seamlessly with the public cloud resources.
The most significant benefit of Cloud computing is elasticity, which is the ability to automatically scale out based on demand and users’ quality of service requests. Having a VPN set-up with dynamic provisioning allows you to do this. Alternatively, set up a broker between the private network and the cloud provider and to manage traffic/demand based on pre-defined security policies.
There is an agreement on the fact that Cloud Computing refers to the practice of delivering software and infrastructure as a service, eventually on a pay per use basis.
Never before an approach to make IT a real utility has been so global and complete: not only computing and storage resources are delivered on demand but the entire stack of computing can be leveraged on the Cloud.