| ISO/IEC 25023:2016 | ISO/IEC DIS 25000-23.2 | |
|---|---|---|
| Published | June 2016, edition 1 | Draft, edition 1, stage 40.20 |
| Pages | 45 | 69 |
| Model | ISO/IEC 25010:2011, eight characteristics | ISO/IEC 25010:2023, nine characteristics |
| Characteristics | Functional suitability, performance efficiency, compatibility, usability, reliability, security, maintainability, portability | Functional suitability, performance efficiency, compatibility, interaction capability, reliability, security, maintainability, flexibility, safety |
| Measure families in the public contents | Not countable from the public record | 40 |
| Annexes | Three: use of measures, QMEs, measurement types | Five: the same three, plus application at different stages and measurement uncertainty |
| Numbering | 25023 | 25000-23.2, earlier circulated as DIS 25023:2026-03 |
The model change, in detail
The 2023 edition of the product quality model is a different shape from the 2011 edition. The table below is read from the public 25059 DIS sample, which prints the 25010:2023 model and marks which subcharacteristics were added or modified.
| Characteristic | 2011 model | 2023 model | In the draft's clause 6 |
|---|---|---|---|
| Functional suitability | Completeness, correctness, appropriateness | The same three, with functional correctness modified and functional adaptability added | 3 families, no adaptability family |
| Performance efficiency | Time behaviour, resource utilization, capacity | The same three, with environmental sustainability added | 3 families, no sustainability family |
| Compatibility | Co-existence, interoperability | Unchanged | 2 families |
| Interaction capability | Called usability: appropriateness recognisability, learnability, operability, user error protection, user interface aesthetics, accessibility | Renamed. User interface aesthetics becomes user engagement; accessibility is split into inclusivity and user assistance; adds self-descriptiveness, which was not a usability subcharacteristic in 2011, and user controllability | 8 families, no controllability family |
| Reliability | Maturity, availability, fault tolerance, recoverability | Maturity becomes faultlessness; the other three stay | 4 families |
| Security | Confidentiality, integrity, non-repudiation, accountability, authenticity | Adds resistance | 6 families |
| Maintainability | Modularity, reusability, analysability, modifiability, testability | Unchanged | 5 families |
| Flexibility | Called portability: adaptability, installability, replaceability | Renamed to flexibility; adds scalability | 4 families |
| Safety | Not a product quality characteristic | New: operational constraint, risk identification, fail safe, hazard warning, safe integration, intervenability | 5 families, no intervenability family |
The count of 2023 subcharacteristics is forty-four: four under functional suitability, four under performance efficiency, two under compatibility, nine under interaction capability, four under reliability, six under security, five under maintainability, four under flexibility and six under safety. The table's 2011 column names the subcharacteristics of the withdrawn edition; the 2023 column names what replaced or joined them. The draft names forty measure families. The difference is the four rows marked above.
What a team has to do about it
- Re-index the measure library to the 2023 model. Renaming usability to interaction capability and portability to flexibility is not enough: the subcharacteristics moved as well.
- Add safety to the report. A library built on the 2011 model has no safety characteristic at all, and five measure families sit under it in the draft.
- Decide how the four subcharacteristics without a family will be measured. A local measure is legitimate if it is labelled as local and built from the same measure elements.
- Read the two new annexes before publication. Annex D changes when a measure can be taken; Annex E matters if a laboratory signs the result.
- Move the numbering in the contract and the quality plan. The draft was circulated as DIS 25023:2026-03 and is now DIS 25000-23.2, and the published designation will be different again.
The rules this is built from
Read from the real rules, not invented.
The comparison is read from the two ISO records, the public contents of the draft, and the public 25010:2023 model table. The measure counts are read from the contents, not from the text.
- Read from the real rules
- 63 record pages behind it
- 116 public headings checked
- Check any line yourself
The measure set is read from the public contents; the model table is read from the public 25010:2023 model. Where the draft text is not public, the page says so instead of filling the gap.