ISO/IEC TS 23167:2020

TECHNICAL ISO/IEC TS
SPECIFICATION 23167
First edition
2020-02
Information technology — Cloud
computing — Common technologies
and techniques
Reference number
©
ISO/IEC 2020
© ISO/IEC 2020
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ii © ISO/IEC 2020 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 4
5 Overview of common technologies and techniques used in cloud computing .4
5.1 General . 4
5.2 Technologies . 5
5.2.1 General. 5
5.2.2 Infrastructure capabilities type of cloud services . 5
5.2.3 Platform capabilities cloud services . 6
5.2.4 Application capabilities type cloud services . 6
5.3 Techniques . 6
6 Virtual machines and hypervisors . 6
6.1 General . 6
6.2 Virtual machines and system virtualization . 7
6.3 Hypervisors. 7
6.3.1 General. 7
6.3.2 Type I hypervisors . 8
6.3.3 Type II hypervisors . 8
6.4 Security of VMs and hypervisors . 9
6.5 VM images, metadata and formats.10
7 Containers and container management systems (CMSs) .11
7.1 General .11
7.2 Containers and operating system virtualization .11
7.2.1 Description of containers .11
7.2.2 Container daemon .12
7.2.3 Container resources, isolation and control .13
7.3 Container images and filesystem layering .14
7.3.1 Image purpose and content .14
7.3.2 Filesystem layering .15
7.3.3 Container image repositories and registries .16
7.4 Container management systems (CMSs) .17
7.4.1 General.17
7.4.2 Common CMS capabilities .17
8 Serverless computing .19
8.1 General .19
8.2 Functions as a service .20
8.2.1 Overview .20
8.2.2 Functions within FaaS .20
8.2.3 Serverless frameworks .21
8.2.4 FaaS relationship to microservices and containers .21
8.3 Serverless databases .22
9 Microservices architecture .22
9.1 General .22
9.2 Advantages and challenges of microservices .23
9.3 Specification of microservices .25
9.4 Multi-layered architecture .25
9.5 Service mesh .28
9.6 Circuit breaker.30
© ISO/IEC 2020 – All rights reserved iii

9.7 API gateway .30
10 Automation .30
10.1 General .30
10.2 Automation of the development lifecycle .31
10.3 Tooling for automation .31
11 Architecture of PaaS systems .32
11.1 General .32
11.2 Characteristics of PaaS systems .33
11.3 Architecture of components running under PaaS system .35
12 Data storage as a service .36
12.1 General .36
12.2 Common features of DSaaS .37
12.3 Capabilities type of DSaaS .40
12.4 Significant additional capabilities of DSaaS .40
13 Networking in cloud computing .41
13.1 Key aspects of networking .41
13.2 Cloud access networking .41
13.3 Intra-cloud networking .42
13.4 Virtual private networks (VPNs) and cloud computing .43
14 Cloud computing scalability .44
14.1 Scalability approaches .44
14.2 Parallel instances and load balancing .45
14.3 Elasticity and automation .46
14.4 Database scalin
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