Page 827 - Cloud computing: From paradigm to operation

Intercloud and interoperability 5

1 Scope
This Recommendation specifies inter-cloud computing functional architecture, including functions and
functional components, based on the inter-cloud computing framework specified in [ITU-T Y.3511]. The
Recommendation builds upon the functional view of the cloud computing reference architecture
[ITU-T Y.3502] and makes extensions to functional components with inter-cloud functions.

The scope of this Recommendation consists of:
– overview of inter-cloud computing functional architecture;
– functions of inter-cloud computing;
– functional components of inter-cloud computing architecture.

2 References
The following ITU-T Recommendations and other references contain provisions which, through reference in
this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated
were valid. All Recommendations and other references are subject to revision; users of this Recommendation
are therefore encouraged to investigate the possibility of applying the most recent edition of the
Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is
regularly published. The reference to a document within this Recommendation does not give it, as a stand-
alone document, the status of a Recommendation.

[ITU-T X.1601] Recommendation ITU-T X.1601 (2015), Security framework for cloud computing.
[ITU-T Y.3502] Recommendation ITU-T Y.3502 (2014) | ISO/IEC 17789: 2014, Information
technology – Cloud computing – Reference architecture.
[ITU-T Y.3511] Recommendation ITU-T Y.3511 (2014), Framework of inter-cloud computing.

[ITU-T Y.3514] Recommendation ITU-T Y.3514 (2017), Cloud computing – Trusted inter-cloud
computing framework and requirements.
[ITU-T Y.3522] Recommendation ITU-T Y.3522 (2016), End-to-end cloud service lifecycle
management requirements.

3 Definitions

3.1 Terms defined elsewhere
This Recommendation uses the following terms defined elsewhere:

3.1.1 activity [ITU-T Y.3502]: A specified pursuit or set of tasks.
3.1.2 cloud service [b-ITU-T Y.3500]: One or more capabilities offered via cloud computing invoked using
a defined interface.
3.1.3 cloud service customer [b-ITU-T Y.3500]: Party which is in a business relationship for the purpose of
using cloud services.
NOTE – A business relationship does not necessarily imply financial agreements.
3.1.4 cloud service provider [b-ITU-T Y.3500]: Party which makes cloud services available.

3.1.5 functional component [ITU-T Y.3502]: A functional building block needed to engage in an activity,
backed by an implementation.

3.1.6 inter-cloud computing [ITU-T Y.3511]: The paradigm for enabling the interworking between two or
more cloud service providers.

NOTE – Inter-cloud computing is also referred as inter-cloud.

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