ISO/IEC TS 7339:2024

Technical
Specification
ISO/IEC TS 7339
First edition
Information technology —
2024-12
Cloud computing — Overview of
platform capabilities type and
platform as a service
Technologies de l'information — Informatique en nuage — Vue
d'ensemble des types de ressources et des services de plateformes
à la demande
Reference number
© ISO/IEC 2024
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© ISO/IEC 2024 – All rights reserved
ii
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 3
5 Overview of platform capabilities type . 4
5.1 General .4
5.2 Examples of capabilities .4
5.3 Capabilities not included in the platform capabilities type . .5
5.4 The legal status of CSC-provided code as customer data .5
5.5 Intellectual property considerations .5
5.6 Cloud service agreement elements for the platform capabilities type.6
6 The cloud service developer sub-role (CSD) . 7
6.1 The definition of cloud service developer .7
6.2 CSD activities .7
6.3 CSDs and the CSC application code lifecycle .7
7 Platform as a Service (PaaS) concepts . . 8
7.1 PaaS as a cloud service category .8
7.2 Benefits of choosing PaaS .8
7.2.1 General .8
7.2.2 Reduced maintenance . .8
7.2.3 Scalability .8
7.2.4 Access to advanced features .8
7.3 The “fuzzy” boundaries between IaaS, PaaS, and SaaS .9
7.3.1 General .9
7.3.2 IaaS vs PaaS .11
7.3.3 PaaS vs SaaS .11
7.3.4 DSaaS as an example .11
7.3.5 Relevance of the boundaries . 12
7.3.6 Selective use of the boundaries . 12
7.3.7 Implications . 12
7.4 Common functions included within a PaaS . 12
7.4.1 General . 12
7.4.2 Documentation of CSP-provided interfaces . 12
7.4.3 CSC-provided code lifecycle management . 13
7.4.4 Identity and access management (IAM) . 13
7.4.5 Message queuing . 13
7.4.6 Load balancing . 13
7.5 Life-cycle of a CSC application on PaaS .14
7.5.1 General .14
7.5.2 Conceptualisation .14
7.5.3 Requirements analysis .14
7.5.4 Code development .14
7.5.5 Application integration.14
7.5.6 Staging and Deployment of an application on PaaS . 15
7.5.7 Operation of an application on PaaS . 15
7.5.8 Scaling of an application on PaaS . 15
7.5.9 Maintenance of an application running on PaaS .16
7.5.10 Disposal of an application running on PaaS .16
7.5.11 Evolution of a CSC application over time .17
7.6 Evolution of a PaaS cloud service implementation over time .17

© ISO/IEC 2024 – All rights reserved
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7.7 The use of PaaS to build SaaS offerings for others .17
8 Architectures for PaaS . 17
8.1 PaaS as a category of pure platform cloud service .17
8.1.1 General .17
8.1.2 General layering .18
8.1.3 Generic architecture for PaaS cloud services .18
8.1.4 Example illustration of the generic PaaS architecture using Kubernetes .19
8.2 Microservice architectures . 20
8.3 Native PaaS .21
8.4 PaaS over an IaaS .21
8.5 PaaS within a SaaS .21
8.6 PaaS linked with a SaaS .21
8.7 User interfaces for PaaS .21
9 Serverless architectures .22
9.1 General . 22
9.2 Function as a Service (FaaS) . 22
9.3 Stateless functions . 22
10 Applications that leverage cloud native computing .23
10.1 Background . 23
10.2 Intended Advantages .
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