CLOUD: A computing infrastructure on demand

This paper presents a latest vision of cloud computing and identifies various commercially available cloud services promising to deliver the infrastructure on demand; defines Cloud computing and provides the architectural detail and different types of clouds such as Blue Cloud built on IBM's massive scale computing initiatives, Google Cloud claimed that business can get started using Google Apps online pretty much instantly, salesforce.com cloud architecture consists of development as services, a set of development tools and APIs that enables enterprise developers to easily harness the promise of the cloud computing. Cloud computing is changing the way we provision hardware and software for on-demand capacity fulfillment and changing the way we develop web applications and make business decisions.