Page 832 - Cloud computing: From paradigm to operation

5 Intercloud and interoperability

Figure 6-5 – Functional components extended with inter-cloud computing functions

7 Functions of inter-cloud computing
As shown in Figure 6-5, the inter-cloud functions only cover extensions to BSSs, OSS, integration and security
systems. The inter-cloud functions are as follows:
– BSS functions, including service subscription management and billing.
– OSS functions, including service catalogue, service provisioning, monitoring and reporting, service
policy management, service level management, incident and problem management and peer
service management.
– Integration functions, including peer CSP management, inter-cloud service negotiation, inter-cloud
service discovery, inter-cloud service selection, inter-cloud service reservation, inter-cloud service
release and inter-cloud capabilities adaptation.
– Security systems functions, including authentication and identity management, authorization and
security policy management and encryption management.

7.1 Business support systems
7.1.1 Service subscription management
The service subscription management function handles the subscription of the CSP to services provided by
peer CSPs as well as subscription of peer CSPs to its own services.
This function includes the following.

– Service subscription management. This allows for managing, e.g., creating, modifying, updating,
deleting and querying inter-cloud service subscription between peer CSPs.

7.1.2 Billing
The billing function generates service charging and invoice for inter-cloud services.

This function includes the following.
– Service charging. This allows for rating the usage of an inter-cloud service based on metering data
of the particular inter-cloud service.

– Service invoice generation. This allows generating inter-cloud service invoice and delivering the
invoices to peer CSPs.

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