Page 107 - Cloud computing: From paradigm to operation

Framework and requirements for cloud computing 1

Annex A

Further details regarding the user view and functional view
(This annex forms an informative part of this Recommendation | International Standard.)

This annex provides further details regarding the relationship of the user view and functional view.

A.1 The cloud service customer–cloud service provider relationship
There are three key elements in the cloud service customer–cloud service provider relationship:
1) the CSC:cloud service user using provider cloud services to achieve their business goals;
2) the CSC:business manager using cloud service provider business capabilities to subscribe to cloud
services and manage their use from a business perspective;
3) the CSC:cloud service administrator using the cloud service provider administration capabilities to
administer the use of the cloud services from the cloud service customer perspective.

A.1.1 Functional relationship
The cloud service is made available to CSC:cloud service users via an end point and interface enabled by the
service access functional component. The functions of this interface and the associated information flows
are domain specific to the cloud service and are thus not in the scope of the reference architecture. However,
there are some broad aspects that should be reflected in the service interface, in particular the need to
identify and authenticate the CSC:cloud service user.
The CSC:cloud service user performs the use cloud service activity through the user function functional
component, which then invokes the cloud service through the service access functional component. The
service access functional component performs any authentication of the CSC:cloud service user and
establishes authorization to use particular capabilities of the cloud service. If authorized, the service access
functional component invokes the cloud service implementation which performs the request.
Figure A.1 illustrates the functional component relationships involved in the use cloud service activity of the
CSC:cloud service user.

99