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3 XaaS
8 Relationships between DaaS functions and functional components of cloud computing reference
architecture
Figure 8-1 shows the mapping between the DaaS functions in clause 7 and the functional components in
[ITU-T Y.3502].
Figure 8-1 – Mapping between DaaS functions and functional components of
cloud computing reference architecture
Among the 18 DaaS functions identified in clause 7, 14 of these can be mapped to functional components in
[ITU-T Y.3502]. These mappings, in terms of the layering framework, are as follows:
– User layer:
• user function: service connection function (see clause 7.4.1)
– Access layer:
• access control functional component: delivery protocol processing function (see clause 7.2.1),
user access management function (see clause 7.2.3)
• connection management functional component: client connection management function (see
clause 7.2.2)
– Resource layer:
• resource abstraction and control functional component: resource assignment function (see
clause 7.1.2), platform virtualization function (see clause 7.1.1)
• physical resources functional component: performance enhancement for virtualization
platform function (see clause 7.1.3)
– Multi-layer functions:
• security systems functional component-authentication and identity management:
infrastructure access management function (see clause 7.1.4)
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