Abstract
This chapter introduces the basic concepts of cloud computing, which is a model for providing on-demand network access to a shared pool of remote and infinitely scalable computing resources, such as networks, servers, storage, applications, and services. Such resources can be rapidly provisioned and released by final users, in most cases without requiring any interaction with the service provider. After providing a definition of cloud computing, this chapter discusses the main characteristics of cloud systems, and describes the main service models (Software as a Service, Platforms as a Service, Infrastructure as a Service) and deployment models (Private Cloud; Community Cloud; Public Cloud; Hybrid Cloud) adopted by cloud providers. This chapter also discusses the most important key research findings on cloud computing.
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