ISO IEC 25020-2019 PDF

Full title and description

ISO/IEC 25020:2019 — Systems and software engineering — Systems and software Quality Requirements and Evaluation (SQuaRE) — Quality measurement framework. This International Standard provides a reference framework for developing and applying measurements of system, software, data and IT service quality; it defines a quality measurement reference model, relationships among types of quality measures, and guidance for selecting, constructing, planning and applying quality measurements.

Abstract

The standard defines a quality measurement reference model and describes relationships among different types of quality measures. It provides guidelines for selecting and constructing quality measures, for planning and performing measurements, and for applying measurement results. Informative annexes address considerations for selecting measure elements (Annex A), assessing reliability and validity (Annex B), documenting measures (Annex C), a normalized measurement function (Annex D) and a measurement information model mapping (Annex E). The model is intended for use across product quality, quality in use, data quality and IT service quality.

General information

• Status: Published.
• Publication date: July 2019 (2019-07).
• Publisher: International Organization for Standardization (ISO) in cooperation with the International Electrotechnical Commission (IEC) — produced by ISO/IEC JTC 1/SC 7.
• ICS / categories: 35.080 (Software).
• Edition / version: Edition 2 (2019).
• Number of pages: 27 pages (as published by ISO).

Scope

ISO/IEC 25020:2019 establishes a framework for creating, selecting and applying quality measures for ICT products and services. It can be applied when designing measurement models for product quality, quality in use, data quality and IT service quality, and supports activities such as defining measurement objectives, selecting and constructing measures, planning measurement programs, collecting and analysing measurement data, and using results for evaluation and decision making. The standard is aimed at stakeholders responsible for specifying and evaluating ICT quality.

Key topics and requirements

• Quality measurement reference model: definitions and structure of measurement constructs.
• Relationships among different types of quality measures (e.g., product quality vs. quality-in-use vs. data quality).
• Guidelines for selecting appropriate quality measures based on objectives and context.
• Guidelines for constructing, documenting and normalizing quality measures (including a normalized measurement function).
• Guidance for planning and performing measurement activities and for applying measurement results to evaluation and decisions.
• Assessment of measurement reliability and validity, and recommended elements for documenting measures (informative annexes).
• Mapping to a measurement information model (including reference to ISO/IEC/IEEE 15939).

Typical use and users

Primary users include developers, acquirers, quality assurance and control staff, evaluators and other stakeholders involved in specifying, measuring and evaluating ICT product and service quality. Typical uses are: specifying measurement requirements, selecting or designing measures to support requirements and acceptance criteria, planning and conducting measurement programs, assessing measurement reliability and validity, and reporting measurement-based evaluations.

Related standards

ISO/IEC 25020:2019 is part of the SQuaRE (ISO/IEC 25000) series. Closely related standards include ISO/IEC 25010 (product quality model) and other Quality Measurement and SQuaRE parts such as ISO/IEC 25021 (quality measure elements), ISO/IEC 25022 (measurement of quality in use) and the evaluation and requirements parts (for example ISO/IEC 25030 and ISO/IEC 25040). The standard replaces and updates ISO/IEC 25020:2007.

Keywords

SQuaRE, quality measurement, measurement reference model, quality measures, measurement planning, measurement reliability, measurement validity, product quality, quality-in-use, data quality, IT service quality.

FAQ

Q: What is this standard?

A: ISO/IEC 25020:2019 is an international standard that defines a framework and guidance for measuring the quality of systems, software, data and IT services. It provides a reference model and guidance for selecting, constructing, planning and applying quality measures.

Q: What does it cover?

A: It covers a quality measurement reference model, relationships among types of measures, guidelines for selecting and constructing measures, guidelines for planning and performing measurements, and guidance for applying measurement results. It also contains informative annexes on measure elements, reliability and validity assessment, documentation items and mapping to measurement information models.

Q: Who typically uses it?

A: Developers, acquirers, quality assurance/control staff, independent evaluators and other stakeholders responsible for specifying, measuring and evaluating ICT quality. It is used when defining measurement objectives, selecting measures, planning measurement programs and reporting evaluation results.

Q: Is it current or superseded?

A: ISO/IEC 25020:2019 is the second edition published in July 2019 and replaces the earlier ISO/IEC 25020:2007 (which was withdrawn). The ISO record shows the 2019 edition as published and confirmed; users should check the ISO catalogue or national standards bodies for any review or later amendments if up-to-date status beyond the 2019 publication is required.

Q: Is it part of a series?

A: Yes. It is part of the ISO/IEC 25000 family (SQuaRE) of standards addressing quality requirements, quality models, measurement and evaluation (for example ISO/IEC 25010, 25021, 25022, 25030, 25040 and related parts).

Q: What are the key keywords?

A: Key keywords include quality measurement, measurement framework, SQuaRE, product quality, quality-in-use, data quality, measurement reliability, measurement validity, quality measures and measurement planning.