CHAPTER 2: OVERVIEW OF EXISTING CLOUD TAXONOMIES AND MODELS
Chapter 1 provided an informal introduction to the main concepts underlying the Cloud computing model. This chapter provides a more formal set of definitions and a common terminology to enable a joint understanding of what is meant by terms such as IaaS, community Clouds and deployment models.
There are a number of different definitions of Cloud computing, with probably the most widely accepted being the definition of Cloud computing produced by NIST.3 The NIST definition describes Cloud computing as being:
[A] model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) ...
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