Systems and software engineering. Systems and software Quality Requirements and Evaluation (SQuaRE). Measurement of system and software product quality

Scope

What is ISO/IEC 25023 – SQuaRE — Measurement of system and software product quality about?

ISO/IEC 25023 defines quality measures for quantitatively evaluating system and software product quality in terms of characteristics and sub characteristics defined in ISO/IEC 25010 and is intended to be used together with ISO/IEC 25010. It can be used in conjunction with the ISO/IEC 2503n and the ISO/IEC 2504n standards or to more generally meet user needs with regard to software product or system quality.

ISO/IEC 25023 contains the following:

• A basic set of quality measures for each characteristic and sub characteristics
• An explanation of how to apply software product and system quality measures

ISO/IEC 25023 includes, as informative annexes, considerations for the use of quality measures (Annex A), QMEs used to define product or system quality measures (Annex B), and detailed explanation of measurement types (Annex C).

ISO/IEC 25023 does not assign ranges of values of the measures to rated levels or to grades of compliance because these values are defined based on the nature of the system, product or a part of the product, and depending on factors such as category of the software, integrity level, and users’ needs. Some attributes could have a desirable range of values, which does not depend on specific user needs but depends on generic factors; for example, human cognitive factors.

The proposed quality measures are primarily intended to be used for quality assurance and improvement of system and software products during or post the development life cycle process.

The main users of ISO/IEC 25023 are people carrying out quality requirement specification and evaluation activities as part of the following:

• Development: including requirements analysis, design specification, coding and testing through acceptance during the life cycle process
• Quality management: systematic examination of the software product or computer system, for example, when evaluating system or software product quality as part of quality assurance, quality control and quality certification;
• Supply: a contract with the acquirer for the supply of a system, software product or software service under the terms of a contract, for example, when validating quality at qualification test
• Acquisition: including product selection and acceptance testing, when acquiring or procuring a system, software product or software service from a supplier;
• Maintenance: improvement of the software product or system based on quality measurement.

Who is ISO/IEC 25023 – SQuaRE — Measurement of system and software product quality for?

ISO/IEC 25023 on SQuaRE — Measurement of system and software product quality is useful for:

• Developers, evaluators system/software products
• Managers, acquirers of system/software products
• Quality management departments
• Suppliers and maintainers of system/software products
• Information technology industry

Why should you use ISO/IEC 25023 – SQuaRE — Measurement of system and software product quality?

ISO/IEC 25023 is a part of the SQuaRE series of International Standards. ISO/IEC 25023 provides a set of quality measures for the characteristics of system/software products that can be used for specifying requirements, measuring and evaluating the system/software product quality, in conjunction with other SQuaRE series of International Standards, especially ISO/IEC 25010, ISO/IEC 25030, ISO/IEC 25040 and ISO/IEC 25041.

Figure 1 depicts the relationship between ISO/IEC 25023 and the other International

Standards in the ISO/IEC 2502n division. Developers, evaluators, quality managers, acquirers, suppliers, maintainers and users of target system/software product can select measures from these International Standards for the measurement of quality characteristics of interest. This could be for defining requirements, evaluating system/software products, performing quality management activities or for other purposes.

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