Page 176 - Cloud computing: From paradigm to operation

1 Framework and requirements for cloud computing

Table I.11 – A use case for cloud service migration in cloud service brokerage

Figure

Pre-conditions The CSP is a member of the CSN: cloud service broker and has an account for accessing CSB
(optional) workspace.
The CSC is a member of the CSN: cloud service broker and has an account for accessing CSB
workspace.
The CSN: cloud service broker and the CSC established a SLA.
The CSC is using a cloud service provided by the CSP(A) though the CSN: cloud service broker.

Post-conditions
(optional)
Derived – Equivalent cloud service selection (See clause 7.2)
requirements – Prevention of service termination during migration (See clause 7.5)

Table I.12 – A use case of cloud service substitution

Title A use case of cloud service substitution.
Description This use case describes a substitution of cloud service used as a member of an integrated cloud
service in cloud service brokerage to keep the SLA between a CSN: cloud service broker and a
CSC.
Various CSPs in the market can register their services with the CSN: cloud service broker.
Different CSPs can register services, which provide the same functionalities to the CSN: cloud
service broker. The CSN: cloud service broker registers a catalogue which describes integrated
cloud service based on multiple cloud services from the different CSPs. The registered
catalogue is provided as a new integrated cloud service through the CSN: cloud service broker.
The CSC selects a cloud service from the CSN: cloud service broker's product catalogue and use
that cloud service according to SLA.
(1) The CSN: cloud service broker monitors the integrated cloud service in real time to
check whether it satisfies the SLA. In addition, real-time monitoring is performed on a

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