Page 164 - Cloud computing: From paradigm to operation

1 Framework and requirements for cloud computing

Table I.3 – A general use case of cloud service integration
Title A general use case of cloud service integration.

Description The CSN: cloud service broker collects multiple cloud services provided by different CSPs,
orchestrates the multiple cloud services and provides value-added cloud services to CSCs
through The CSN: cloud service broker's cloud product catalogue.
The CSPs register cloud services to the CSN: cloud service broker in product catalogue, which
is the unique one provided to the CSC by the CSN: cloud service broker with all CSPs cloud
services. The synchronization of the product catalogue can be triggered by the registered CSPs
or the CSN: cloud service broker itself in case of modification in the cloud services.
The CSN: cloud service broker integrates the cloud services from CSPs by an integration logic
and provides the value-added services in the product catalogue.
NOTE – The integration logic describes interactions among the cloud services and specifies the
method to enable the interactions.
After the CSC selects and orders the integrated cloud service from the product catalogue, the
CSN: cloud service broker makes requests for service creation to CSPs for all cloud services
which are subservices of integrated cloud service. After all cloud services are created, the CSN:
cloud service broker enables interactions among cloud services by utilizing the integration
logic. Once the integration procedure has been finished, the CSN: cloud service broker sends
service access information to the CSC so that the CSC can accesses to the integrated cloud
services.
The CSN: cloud service broker manages controls and status of the integrated cloud service and
each subservice is managed simultaneously.
The cloud services on multiple CSPs are interacted with each other based on the service
integration logic.
All monitor information can be collected by the CSN: cloud service broker to provide the CSC
with an overall view of cloud services together. The unified charges can be proved to the CSC
by the CSN: cloud service broker.
Roles/sub-roles CSP, CSN: cloud service broker, CSC

Figure

Pre-conditions The CSN: cloud service broker and multiple CSPs achieve a cooperation agreement and the
(optional) CSN: cloud service broker can sell these CSPs' cloud services.
The CSN: cloud service broker adapts the different cloud APIs of multiple CSPs.
Post-conditions The CSCs can build application systems upon integrated cloud environment upon multiple CSPs
(optional) based on the brokerage capabilities provided by the CSN: cloud service broker.

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