ISO IEC 25019-2023 PDF

Full title and description

Systems and software engineering — Systems and software Quality Requirements and Evaluation (SQuaRE) — Quality-in-use model. This international standard defines a quality‑in‑use model composed of three high‑level characteristics (with sub‑characteristics) for specifying, measuring, evaluating and improving the effects experienced by stakeholders when information systems, IT service systems or software products are used in a specified context of use.

Abstract

ISO/IEC 25019:2023 provides a quality‑in‑use model (three characteristics and their sub‑characteristics) that is applicable across the spectrum of information systems and IT service systems, including software products in use. The standard emphasises that context of use is a prerequisite for evaluating quality‑in‑use and must be re‑specified when context changes. It is intended to help specify requirements, set evaluation and acceptance criteria, measure quality‑in‑use, and support governance and ethics considerations related to system use.

General information

• Status: Published.
• Publication date: 24 November 2023 (Edition 1, 2023).
• Publisher: Joint ISO/IEC publication (ISO/IEC JTC 1/SC 7).
• ICS / categories: 35.080 (Software).
• Edition / version: Edition 1 (2023).
• Number of pages: 31 pages (official ISO edition).

Scope

Defines a quality‑in‑use model for the full spectrum of information systems and IT service systems, including software products in use. The model describes stakeholder‑facing characteristics that reflect the effects and influences of using a product or system within a specified context of use; it is intended for use when specifying, measuring, evaluating or improving quality experienced during actual use. The standard requires that context of use (users, tasks, resources, environment) be defined as a prerequisite and re‑specified when that context changes.

Key topics and requirements

• Quality‑in‑use model structured around three high‑level characteristics and further subdivided sub‑characteristics for stakeholder‑facing evaluation.
• Context of use is mandatory as a prerequisite for evaluation; changes to context require re‑specification.
• Guidance for specifying measurable quality‑in‑use requirements and acceptance/evaluation criteria.
• Applicability across information systems, IT service systems and software products in operation.
• Support for stakeholder mapping (developers, acquirers, QA, independent evaluators) and use cases such as requirements identification, validation, design objectives, control criteria and ethics considerations.
• Intended to be used with other SQuaRE parts (product‑quality and measurement standards) for a complete quality specification and measurement approach.

Typical use and users

Used by software and system developers, acquirers, quality assurance and control staff, independent evaluators, and programme managers who need to specify, measure or evaluate the quality experienced by users in real use contexts. Common activities include writing quality‑in‑use requirements, defining acceptance criteria, designing evaluation measures, and informing governance/ethics assessments.

Related standards

Part of the ISO/IEC 25000 (SQuaRE) family. Closely related documents include ISO/IEC 25010 (product quality model, revised 2023), the ISO/IEC 2502x measurement parts (25020–25024) and other SQuaRE guidance (25000, 25002, 25012, etc.). ISO/IEC 25019 is intended to be used alongside product‑quality and measurement standards for complete quality specification and evaluation workflows.

Keywords

Quality‑in‑use, SQuaRE, ISO/IEC 25019, context of use, effectiveness, efficiency, satisfaction, freedom from risk, stakeholder evaluation, measurement, acceptance criteria, IT service system.

FAQ

Q: What is this standard?

A: An international standard that defines a quality‑in‑use model for systems, IT services and software products — part of the ISO/IEC 25000 SQuaRE family.

Q: What does it cover?

A: The model’s high‑level characteristics (with sub‑characteristics), how to use a defined context of use as a prerequisite, and guidance for specifying, measuring and evaluating quality as experienced by stakeholders in real use.

Q: Who typically uses it?

A: Developers, acquirers, QA/control staff, independent evaluators and others responsible for specifying and assessing the quality of information systems, IT services and software in operation.

Q: Is it current or superseded?

A: Current — published November 2023 (Edition 1). It is part of the 25000 family that updated and reorganised earlier quality models; some earlier documents (for example older 25010 editions) have been revised as parts of the 2023 update cycle.

Q: Is it part of a series?

A: Yes — it is part of the ISO/IEC 25000 (SQuaRE) series and is designed to be used with related parts such as the product quality model (ISO/IEC 25010) and the measurement standards (ISO/IEC 25020–25024).

Q: What are the key keywords?

A: Quality‑in‑use, context of use, SQuaRE, stakeholder evaluation, effectiveness, efficiency, satisfaction, freedom from risk, measurement.