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5 Intercloud and interoperability

NaaS Network as a Service

NIST National Institute of Standards and Technology
OASIS Organization for the Advancement of Structured Information Standards
OCC Open Cloud Consortium

OCCI Open Cloud Computing Interface
OCCI-WG OCCI Working Group
ODCA Open Data Center Alliance

OGF Open Grid Forum
OVF Open Virtualization Format
PaaS Platform as a Service
PoC Proof of Concept

REST Representational State Transfer
SaaS Software as a Service
SAJACC Standards Acceleration to Jumpstart the Adoption of Cloud Computing

SCIM System for Cross-domain Identity Management
SDO Standards Development Organization
SIIF Standard for Inter-cloud Interoperability and Federation
SLA Service Level Agreement

SMI Simple Management Interface
SNIA Storage Networking Industry Association
SOA Service Oriented Architecture

SPEC Standard Performance Evaluation Corporation
VM Virtual Machine
NOTE – Abbreviations not described in this supplement can be found in [ITU-T Y.3500] and other reference documents
listed in clause 2.

4 Introduction
The purpose of this supplement is to provide the list of existing cloud computing interoperability and testing
related activities. Clause 5 describes cloud computing interoperability activities by different standards
development organizations (SDOs) while clause 6 identifies potential cloud computing interoperability
testing areas. This supplement is intended to be of help for developing cloud computing interoperability
testing Recommendations.

5 Existing cloud computing interoperability activities

5.1 Standards development organizations for cloud computing interoperability
Many SDOs are developing cloud standards. Some of them are listed in ITU-T FG-Cloud technical reports.
From an interoperability testing perspective, some SDOs do not conduct testing themselves but conduct
joint/collaborative/sponsored testing groups as described in clause 5.2. For example, Distributed
Management Task Force (DMTF), European Telecommunications Standards Institute (ETSI), Organization for
the Advancement of Structured Information Standards (OASIS), Storage Networking Industry Association
(SNIA) and some SDOs sponsored Cloud Plugfest as part of the Cloud Interoperability Week where, during
the testing of specifications, they improved such Cloud standards as cloud data management interface
(CDMI), open cloud computing interface (OCCI), cloud infrastructure management interface (CIMI) and open

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