The cloud

Nowadays the term cloud is probably one of the most overused terms in the IT industry. For the purpose of this book the definition given by the National Institute of Standards and Technology (NIST) as published in March 2011 is used. Figure 2.1 shows on a high level how NIST sees the current cloud offerings in the market. However, there already are “flavors” of cloud services that NIST does not really address. We will take a closer look at some of them later in this chapter in “Beyond the Cloud.”

Some people have problems in understanding what exactly the various cloud definitions mean. The following sections will provide you with a definition for the three service models and the three deployment models. Any combination of service ...

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