Distinguishing Cloud Types

Cloud-based applications provide a wide range of solutions to a very large number of users. To help us analyze and describe cloud-based systems, many people refer to a cloud solution in terms of its deployment model and services model. These two terms originated within a cloud computing document from the National Institute of Standards and Technology (NIST), as shown in FIGURE 1-5.

Deployment model shows four clouds representing community, hybrid, private, and public. Software as a service S a a S, Platform as a service P a a S, and Infrastructure as a service I a a S represent services model.

FIGURE 1-5 Users refer to cloud solutions based on the system’s deployment and services models.

Cloud Deployment Models

A cloud deployment model specifies how resources within the cloud are shared. As discussed in TABLE 1-2, there are ...

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