Page 930 - Cloud computing: From paradigm to operation

5 Intercloud and interoperability

The IPPM working group works on testing methodology related aspects of CCI.

The IPPM working group develops and maintains standard metrics that can be applied to the quality,
performance, and reliability of Internet data delivery services and applications running over transport layer
protocols (e.g., TCP, UDP) over IP.

Some CCI related individual Internet drafts have also been submitted to IETF.
The draft Cloud Reference Framework presents a cloud reference framework that intends to provide a basis
for designing interoperable cloud services and their integration into existing open Internet and enterprise IT
infrastructures [draft-khasnabish-cloud-reference-framework].

Table 5-5 – IETF documents and work items related to CCI

Reference Name/Title Status
IETF RFC 2330 Framework for IP Performance Metrics Published
IETF RFC 4110 A Framework for Layer 3 Provider-Provisioned Virtual Published
Private Networks
IETF RFC 6749 The OAuth 2.0 Authorization Framework Published
I-D. draft-ietf-scim-core-schema-03 System for Cross-domain Identity Management: Core Draft
Schema
I-D. draft-khasnabish-cloud-reference- Cloud Reference Framework Draft
framework

5.1.6 ISO/IEC JTC1

ISO/IEC JTC 1 is the Joint Technical Committee 1 of the International Organization for Standardization (ISO)
and the International Electrotechnical Commission (IEC). Its purpose as a technical committee is to develop,
maintain, promote, and facilitate standards in the fields of IT and information and communication
technology (ICT).
The scope of JTC1/SC38 (subcommittee 38 of JTC1, distributed application platforms and services (DAPS)) is
standardization for interoperable DAPS including web services, service oriented architecture (SOA) and cloud
computing.
The WG3 (working group on Cloud Computing) of JTC1/SC38 works on definitions related aspects of CCI.
JTC1/SC38 developed Overview and Vocabulary [ISO/IEC WD 17788] and Reference Architecture of cloud
computing [ISO/IEC DIS 17789].

ISO/IEC JTC 1/SC 38 (specifically WG 3: Cloud Computing) and ITU-T/SG 13 form the Collaborative Teams on
Cloud Computing Overview and Vocabulary (CT-CCVOCAB) and Cloud Computing Reference Architecture
(CT-CCRA). The purpose of the collaboration is to develop a common text, in the form of a new standard,
between the two groups based on two documents: Draft new Recommendation Y.CCdef Cloud Computing
Definition and Vocabulary (from ITU-T Q.26/13), and ISO/IEC WD 17788 – Cloud Computing Vocabulary and
ISO/IEC WD 17789 – Cloud Computing Reference Architecture (from ISO/IEC JTC 1/SC 38/WG 3).
Cloud computing interoperability (CCI) is defined in CT-CCVOCAB as follows:

Interoperability in the context of cloud computing includes the ability of a cloud service customer (CSC) to
interact with a cloud service and exchange information according to a prescribed method and obtain
predictable results.

Interoperability also includes the ability for one cloud service to work with other cloud services, either
through a cloud service provider-to-provider relationship, or where a CSC uses multiple different cloud
services in some form of composition to achieve their business goals.

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