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.
This article compares prices (roughly) of Australia hosters that are currently offering pay-as-you-go infrastructure.
The commodity layer of Cloud Computing is rapidly maturing, leaving room for the next wave of innovation. Market Oriented Infrastructure, Continue reading
Paper on Market Oriented Cloud Computing presents the 21st century vision of computing
and identifies various IT paradigms promising to deliver computing as a utility