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Publication What is "Cloud"?
This paper follows the history of the term “cloud” from the beginning of the Internet to the era of cloud computing, and ponders its past and current meaning. We argue that outsourcing is the primary meaning of “cloud”. We discuss elasticity and its significance in cloud computing. Elasticity is a key cost-cutting measure, especially for startup companies, but is not a requirement for cloud systems. We discuss the simple service layer model and the role of software components on different layers. We refine the model to better capture real-world use cases. This is achieved by dividing the layers into solutions and solutions further into components. Finally, we define a new computing business model. In this model, a company manages the entire computing experience of users. We conclude with discussion of the new business model and the possibilities it offers for users of the cloud.
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