Page 93 - Cloud computing: From paradigm to operation

Framework and requirements for cloud computing 1

Figure 9-2 presents a high level overview of the CCRA functional components organized by means of the
layering framework.

Figure 9-2 – Functional components of the CCRA

9.2.1 User layer functional components

The user layer functional components include:
• user function;
• business function;
• administrator function.

The cloud services that are presented to CSC:cloud service users can be broken down into two major
categories, functional services and self-service management services. The latter can be further divided into
business and administration services.

The interface that is presented to the user of the cloud service encompasses the primary function of the
cloud service. This is distinct from the interface that is used to manage the use of the cloud service. But all
cases are cloud services, tailored for different types of capabilities.
9.2.1.1 User function

The user function functional component supports the CSC:cloud service user to access and use cloud services
(the use service activity). In some cases, the user function functional component could be as simple as a
browser running on a user device. However, in other cases, it might involve a sophisticated enterprise system
running business processes, applications, middleware and associated infrastructure.
9.2.1.2 Business function

The business function functional component supports the cloud computing activities of the CSC:business
manager including the selection and purchase of cloud services; the accounting and financial management
relating to the use of cloud services. It should be noted that business capabilities are themselves offered via
cloud services.

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