Cloud Computing by Nayan B. Ruparelia

Author:Nayan B. Ruparelia [Ruparelia, Nayan B.]
Language: eng
Format: epub, pdf
Publisher: MIT Press
Published: 2016-05-13T20:15:02+00:00

6

Use Case Pattern #1:

IaaS and PaaS

In the first two chapters, we discussed abstraction levels when discussing service models. In this chapter, we build on that discussion by considering the general uses of the IaaS and PaaS abstraction types, their pros and cons, and the price models most suited for them. In particular, we will consider:

• various business use cases that employ the IaaS and PaaS deployment models,

• SWOT analysis of the use cases, and

• questions to ask when buying IaaS and PaaS based cloud services.

Typically, a use case is used to define requirements and the sequence of interactions in order to effect a solution in the form of a service, function, or application. When commonality is detected between use cases that can be implemented using a distinct solution, then it is called a use case pattern. These use case patterns can generally be implemented using micro-services. When standardized and implemented in the cloud, we shall refer to them as cloud cells. Thus cloud cells implement use case patterns. We consider use case patterns for IaaS and PaaS in this chapter. Subsequent chapters cover the other cloud deployment models.

In conjunction with this chapter, you may wish to refer to the checklist provided in the chapter “Transitioning to the Cloud” that considers many of the questions you would ask, in a nutshell, when considering cloud computing. Please bear in mind that commercial examples provided in this chapter to illustrate various use cases are not comprehensive and are for illustrative purposes only.

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