ISO/IEC 22123-2:2023

INTERNATIONAL ISO/IEC
STANDARD 22123-2
First edition
2023-09
Information technology — Cloud
computing —
Part 2:
Concepts
Technologies de l'information — Informatique en nuage —
Partie 2: Concepts
Reference number
© ISO/IEC 2023
© ISO/IEC 2023
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Published in Switzerland
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© ISO/IEC 2023 – All rights reserved

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms.2
5 Cloud computing foundational concepts . 3
5.1 General . 3
5.2 Key characteristics of cloud computing . 3
5.2.1 General . 3
5.2.2 Broad network access . 3
5.2.3 Measured service . 4
5.2.4 Multi-tenancy . 4
5.2.5 On-demand self-service . . 4
5.2.6 Rapid elasticity and scalability . 4
5.2.7 Resource pooling . 5
5.3 Cloud capabilities types . 5
5.4 Cloud service categories . 6
5.4.1 General . 6
5.4.2 Software as a service (SaaS) . 6
5.4.3 Platform as a service (PaaS) . 6
5.4.4 Infrastructure as a service (IaaS) . 7
5.4.5 Network as a service (NaaS) . 7
5.4.6 Communications as a service (CaaS) . 8
5.4.7 Compute as a service (CompaaS) . 9
5.4.8 Data storage as a service (DSaaS) . 9
5.5 Cloud deployment models . 9
5.5.1 General . 9
5.5.2 Private cloud deployment model . 10
5.5.3 Public cloud deployment model . 11
5.5.4 Community cloud deployment model .12
5.5.5 Hybrid cloud deployment model . 14
6 Cloud computing parties and roles .15
6.1 Cloud computing parties. 15
6.2 Cloud computing roles .15
6.2.1 General .15
6.2.2 Cloud service customer role . 16
6.2.3 Cloud service provider role . 16
6.2.4 Cloud service partner role . 16
7 Cloud computing cross-cutting aspects .16
7.1 General . 16
7.2 Auditability . 17
7.3 Availability . 17
7.4 Governance . 17
7.5 Interoperability. 18
7.6 Maintenance and versioning . 18
7.7 Performance . 19
7.8 Portability . 19
7.9 Protection of PII . 19
7.10 Regulatory . 20
7.11 Resiliency . 21
7.12 Reversibility . 21
7.13 Security . 22
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© ISO/IEC 2023 – All rights reserved

7.14 Service levels and service level agreement . 22
8 Data and cloud services .22
8.1 General .22
8.2 Data processing within cloud services . 23
8.3 Data flow .23
8.4 Processing of data from multiple sources . 23
8.5 Data sharing . 24
9 Virtualization concepts .24
9.1 General . 24
9.2 System hardware virtualization . 24
9.2.1 General . 24
9.2.2 Virtual machines . 24
9.2.3 Hypervisors . 25
9.3 Containers . 25
9.4 Serverless computing .25
9.5 Virtualized networking .25
9.6 Virtualized DSaaS . 25
10 Concepts of cloud computing involving multiple CSPs .26
10.1 General . 26
10.2 Types of cloud computing involving multiple CSPs . 26
10.2.1 General .
...