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Framework and requirements for cloud computing                              1


            8.3     Overview of inter-cloud intermediary

            8.3.1   Introduction
            The inter-cloud intermediary pattern provides the capability for CSPs to offer additional services to the CSCs
            and to other CSPs.

            As  shown  in  Figure  8-7,  one  of  the  central  components  of  the  inter-cloud  intermediary  pattern  is  the
            catalogue of service offerings. This CSP's catalogue is a registry that includes the services that the CSP offers
            to CSCs and to other CSPs. The catalogue provides the capability for CSCs and CSPs to obtain services from
            the CSP offering the services. This catalogue may be accessible through a portal and/or via a well-defined
            interface or API.


                                                       Cloud service provider





                                                             Catalogue of
                                                           service offerings






                                     Cloud service provider  CSC 1     CSC 2    CSC 3

                                                             Cloud service customers (CSCs)
                                                                             Y.3511(14)_F8-7


                        Figure 8-7 – CSCs and CSPs accessing cloud services offerings through a catalogue


            In addition to the catalogue of service offerings, the CSP can include functions for the support of service
            intermediation, service aggregation and service arbitrage as described in clause 7.3.
            8.3.2   Primary CSP and secondary CSP

            The CSP that is responsible for offering the service to the CSC is the primary CSP. The CSPs that support the
            primary CSP by offering their services are the secondary CSPs.

            In an inter-cloud intermediary pattern (see Figure 8-8), services listed in the primary CSP catalogue of service
            offerings may include the services hosted by the primary CSP itself or services that are provided by secondary
            CSPs. In most cases, the primary CSP catalogue of service offerings will be a combination of services hosted
            by the primary CSP and services offered by the secondary CSPs.


























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