1、 International Telecommunication Union ITU-T Y.3500TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (08/2014) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Cloud Computing Information technology Cloud computing Overview and vocabulary Recommendati
2、on ITU-T Y.3500 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, applications and middleware Y.200Y.299 Network aspects Y.300Y.399 Interfaces and protocols Y.400Y.49
3、9 Numbering, addressing and naming Y.500Y.599 Operation, administration and maintenance Y.600Y.699 Security Y.700Y.799 Performances Y.800Y.899 INTERNET PROTOCOL ASPECTS General Y.1000Y.1099 Services and applications Y.1100Y.1199 Architecture, access, network capabilities and resource management Y.12
4、00Y.1299 Transport Y.1300Y.1399 Interworking Y.1400Y.1499 Quality of service and network performance Y.1500Y.1599 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.1799 Charging Y.1800Y.1899 IPTV over NGN Y.1900Y.1999 NEXT GENERATION NETWORKS Frameworks and functional archite
5、cture models Y.2000Y.2099 Quality of Service and performance Y.2100Y.2199 Service aspects: Service capabilities and service architecture Y.2200Y.2249 Service aspects: Interoperability of services and networks in NGN Y.2250Y.2299 Enhancements to NGN Y.2300Y.2399 Network management Y.2400Y.2499 Networ
6、k control architectures and protocols Y.2500Y.2599 Packet-based Networks Y.2600Y.2699 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 Carrier grade open environment Y.2900Y.2999 FUTURE NETWORKS Y.3000Y.3499 CLOUD COMPUTING Y.3500Y.3999For further details, please refer to the list of ITU-T Re
7、commendations. Rec. ITU-T Y.3500 (08/2014) i INTERNATIONAL STANDARD ISO/IEC 17788 RECOMMENDATION ITU-T Y.3500 Information technology Cloud computing Overview and vocabulary Summary This Recommendation | International Standard provides an overview of cloud computing, and defines related terms. The te
8、rms and definitions provided in this Recommendation | International Standard: cover commonly used terms and definitions in cloud computing standards; will not cover all terms and definitions used in cloud computing standards; and do not preclude the definition of additional terms for use in cloud co
9、mputing standards. History Edition Recommendation Approval Study Group Unique ID*1.0 ITU-T Y.3500 2014-08-13 13 11.1002/1000/12210 _ *To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, htt
10、p:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T Y.3500 (08/2014) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization S
11、ector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets ev
12、ery four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purvi
13、ew, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is volun
14、tary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and th
15、e negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve
16、 the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recomme
17、ndation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at h
18、ttp:/www.itu.int/ITU-T/ipr/. ITU 2014 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Y.3500 (08/2014) iii CONTENTS Page 1 Scope 1 2 Normative references . 1 2.1 Identical Recommendations | Internati
19、onal Standards 1 2.2 Paired Recommendations | International Standards 1 2.3 Additional references 1 3 Definitions 1 3.1 Terms defined elsewhere . 1 3.2 Terms defined in this Recommendation | International Standard 2 4 Abbreviations . 4 5 Conventions 4 6 Cloud computing overview 4 6.1 General 4 6.2 K
20、ey characteristics 4 6.3 Cloud computing roles and activities 5 6.4 Cloud capabilities types and cloud service categories . 6 6.5 Cloud deployment models . 6 6.6 Cloud computing cross cutting aspects . 7 Annex A Cloud service categories 9 Bibliography 10 ISO/IEC 17788:2014 (E) Rec. ITU-T Y.3500 (08/
21、2014) 1 INTERNATIONAL STANDARD RECOMMENDATION ITU-T Information technology Cloud computing Overview and vocabulary 1 Scope This Recommendation | International Standard provides an overview of cloud computing along with a set of terms and definitions. It is a terminology foundation for cloud computin
22、g standards. This Recommendation | International Standard is applicable to all types of organizations (e.g., commercial enterprises, government agencies, not-for-profit organizations). 2 Normative references The following Recommendations and International Standards contain provisions which, through
23、reference in this text, constitute provisions of this Recommendation | International Standard. At the time of publication, the editions indicated were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this Recommendation | International Standard are
24、 encouraged to investigate the possibility of applying the most recent edition of the Recommendations and Standards listed below. Members of IEC and ISO maintain registers of currently valid International Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currentl
25、y valid ITU-T Recommendations. 2.1 Identical Recommendations | International Standards None. 2.2 Paired Recommendations | International Standards None. 2.3 Additional references None. 3 Definitions 3.1 Terms defined elsewhere This Recommendation | International Standard uses the following terms defi
26、ned elsewhere. The following terms are defined in ISO/IEC 27000: 3.1.1 availability: Property of being accessible and usable upon demand by an authorized entity. 3.1.2 confidentiality: Property that information is not made available or disclosed to unauthorized individuals, entities, or processes 3.
27、1.3 information security: Preservation of confidentiality (3.1.2), integrity (3.1.4) and availability (3.1.1) of information. NOTE In addition, other properties, such as authenticity, accountability, non-repudiation, and reliability can also be involved. 3.1.4 integrity: Property of accuracy and com
28、pleteness. The following term is defined in Rec. ITU-T Y.101: 3.1.5 interoperability: The ability of two or more systems or applications to exchange information and to mutually use the information that has been exchanged. The following term is defined in ISO/IEC 27729: 3.1.6 party: Natural person or
29、 legal person, whether or not incorporated, or a group of either. ISO/IEC 17788:2014 (E) 2 Rec. ITU-T Y.3500 (08/2014) The following term is defined in ISO/IEC 20000-1: 3.1.7 service level agreement (SLA): Documented agreement between the service provider and customer that identifies services and se
30、rvice targets. NOTE 1 A service level agreement can also be established between the service provider and a supplier, an internal group or a customer acting as a supplier. NOTE 2 A service level agreement can be included in a contract or another type of documented agreement. 3.2 Terms defined in this
31、 Recommendation | International Standard For the purposes of this Recommendation | International Standard, the following definitions apply: 3.2.1 application capabilities type: Cloud capabilities type (3.2.4) in which the cloud service customer (3.2.11) can use the cloud service providers (3.2.15) a
32、pplications. 3.2.2 cloud application portability: Ability to migrate an application from one cloud service (3.2.8) to another cloud service (3.2.8). 3.2.3 cloud auditor: Cloud service partner (3.2.14) with the responsibility to conduct an audit of the provision and use of cloud services (3.2.8). 3.2
33、.4 cloud capabilities type: Classification of the functionality provided by a cloud service (3.2.8) to the cloud service customer (3.2.11), based on resources used. NOTE The cloud capabilities types are application capabilities type (3.2.1), infrastructure capabilities type (3.2.25) and platform cap
34、abilities type (3.2.31). 3.2.5 cloud computing: Paradigm for enabling network access to a scalable and elastic pool of shareable physical or virtual resources with self-service provisioning and administration on-demand. NOTE Examples of resources include servers, operating systems, networks, softwar
35、e, applications, and storage equipment. 3.2.6 cloud data portability: Data portability (3.2.21) from one cloud service (3.2.8) to another cloud service (3.2.8). 3.2.7 cloud deployment model: Way in which cloud computing (3.2.5) can be organized based on the control and sharing of physical or virtual
36、 resources. NOTE The cloud deployment models include community cloud (3.2.19), hybrid cloud (3.2.23), private cloud (3.2.32) and public cloud (3.2.33). 3.2.8 cloud service: One or more capabilities offered via cloud computing (3.2.5) invoked using a defined interface. 3.2.9 cloud service broker: Clo
37、ud service partner (3.2.14) that negotiates relationships between cloud service customers (3.2.11) and cloud service providers (3.2.15). 3.2.10 cloud service category: Group of cloud services (3.2.8) that possess some common set of qualities. NOTE A cloud service category can include capabilities fr
38、om one or more cloud capabilities types (3.2.4). 3.2.11 cloud service customer: Party (3.1.6) which is in a business relationship for the purpose of using cloud services (3.2.8). NOTE A business relationship does not necessarily imply financial agreements. 3.2.12 cloud service customer data: Class o
39、f data objects under the control, by legal or other reasons, of the cloud service customer (3.2.11) that were input to the cloud service (3.2.8), or resulted from exercising the capabilities of the cloud service (3.2.8) by or on behalf of the cloud service customer (3.2.11) via the published interfa
40、ce of the cloud service (3.2.8). NOTE 1 An example of legal controls is copyright. NOTE 2 It may be that the cloud service (3.2.8) contains or operates on data that is not cloud service customer data; this might be data made available by the cloud service providers (3.2.15), or obtained from another
41、 source, or it might be publicly available data. However, any output data produced by the actions of the cloud service customer (3.2.11) using the capabilities of the cloud service (3.2.8) on this data is likely to be cloud service customer data (3.2.12), following the general principles of copyrigh
42、t, unless there are specific provisions in the cloud service (3.2.8) agreement to the contrary. 3.2.13 cloud service derived data: Class of data objects under cloud service provider (3.2.15) control that are derived as a result of interaction with the cloud service (3.2.8) by the cloud service custo
43、mer (3.2.11). NOTE Cloud service derived data includes log data containing records of who used the service, at what times, which functions, types of data involved and so on. It can also include information about the numbers of authorized users and their identities. It can also include any configurat
44、ion or customization data, where the cloud service (3.2.8) has such configuration and customization capabilities. ISO/IEC 17788:2014 (E) Rec. ITU-T Y.3500 (08/2014) 3 3.2.14 cloud service partner: Party (3.1.6) which is engaged in support of, or auxiliary to, activities of either the cloud service p
45、rovider (3.2.15) or the cloud service customer (3.2.11), or both. 3.2.15 cloud service provider: Party (3.1.6) which makes cloud services (3.2.8) available. 3.2.16 cloud service provider data: Class of data objects, specific to the operation of the cloud service (3.2.8), under the control of the clo
46、ud service provider (3.2.15). NOTE Cloud service provider data includes but is not limited to resource configuration and utilization information, cloud service (3.2.8) specific virtual machine, storage and network resource allocations, overall data centre configuration and utilization, physical and
47、virtual resource failure rates, operational costs and so on. 3.2.17 cloud service user: Natural person, or entity acting on their behalf, associated with a cloud service customer (3.2.11) that uses cloud services (3.2.8). NOTE Examples of such entities include devices and applications. 3.2.18 Commun
48、ications as a Service (CaaS): Cloud service category (3.2.10) in which the capability provided to the cloud service customer (3.2.11) is real time interaction and collaboration. NOTE CaaS can provide both application capabilities type (3.2.1) and platform capabilities type (3.2.31). 3.2.19 community
49、 cloud: Cloud deployment model (3.2.7) where cloud services (3.2.8) exclusively support and are shared by a specific collection of cloud service customers (3.2.11) who have shared requirements and a relationship with one another, and where resources are controlled by at least one member of this collection. 3.2.20 Compute as a Service (CompaaS): Cloud service category (3.2.10) in which the capabilities provided to the cloud service customer (3.2.11) are the provision and use of
