ISO IEC 20924-2024 PDF

Full title and description

St ISO/IEC 20924:2024 — Internet of Things (IoT) and digital twin — Vocabulary. This international standard defines terms and provides a controlled vocabulary for IoT and digital twin concepts to support consistent communication across standards, implementations and documentation.

Abstract

This third edition provides definitions for “Internet of Things” and “digital twin” and a wider set of terms used across IoT and digital-twin related standards. It updates and expands earlier IoT vocabulary editions (2018, 2021) by adding new terms used in related ISO/IEC IoT standards, revising definitions to reflect current usage, and extending the digital twin vocabulary and scope.

General information

• Status: Published.
• Publication date: February 2024 (publication records indicate Feb 20–22, 2024 across different catalogues).
• Publisher: Joint ISO/IEC standard produced under ISO/IEC JTC 1/SC 41.
• ICS / categories: 35.020; 01.040.35 (Information technology; office machines / IoT & terminology).
• Edition / version: Edition 3 (2024).
• Number of pages: Catalog entries list 10 pages (ISO catalogue) and 14 pages (IEC webstore redline listing); allow for small format differences between publishers.

Scope

The standard provides a terminology foundation for the Internet of Things and digital twin disciplines, supplying definitions and consistent usage guidance to be used across IoT and digital-twin standards and implementations. It cancels and replaces the prior (2021) edition and focuses on extending digital-twin related vocabulary while aligning definitions with current IoT practice.

Key topics and requirements

• Authoritative definitions of “Internet of Things”, “digital twin” and related core concepts used across IoT standards.
• Addition of new terms adopted by other ISO/IEC IoT standards to improve cross-standard interoperability.
• Revisions to existing definitions to reflect contemporary technical and usage changes in IoT ecosystems.
• Extension and clarification of digital twin vocabulary and scope to better support manufacturing and cross-domain DT frameworks.
• Intended to be a normative reference for terminology in related IoT architecture, interoperability and digital twin standards.

Typical use and users

Used by standards developers, IoT architects, solution designers, implementers, technical writers, educators and procurement/specification teams to ensure a consistent vocabulary when designing, documenting or regulating IoT and digital twin systems. It is also used by policy makers and certification bodies as a reference for defined terms.

Related standards

Closely related standards and series include ISO/IEC 30141 (IoT — Reference architecture), the ISO 23247 series (Digital twin framework for manufacturing), ISO/IEC 21823 (IoT interoperability framework) and other JTC 1/SC 41 outputs; ISO/IEC 20924:2024 is intended to be used as the vocabulary/terminology companion for these and other IoT/digital-twin standards.

Keywords

Internet of Things, IoT, digital twin, vocabulary, terminology, definitions, interoperability, ISO/IEC JTC 1/SC 41.

FAQ

Q: What is this standard?

A: ISO/IEC 20924:2024 is an international vocabulary standard that provides authoritative terms and definitions for the Internet of Things and digital twin domains; it is the third edition of the ISO/IEC 20924 series.

Q: What does it cover?

A: It covers definitions for IoT and digital twin concepts, updates and new terms adopted across IoT standards, and extensions to digital twin vocabulary and scope to support interoperability and consistent use across related standards.

Q: Who typically uses it?

A: Standards developers, IoT architects and engineers, implementers, technical authors, procurement/specification teams, academics and regulators — anyone who needs a stable, shared vocabulary for IoT and digital twin work.

Q: Is it current or superseded?

A: Current — ISO/IEC 20924:2024 (Edition 3, Feb 2024) is published and replaces the 2021 edition. Work items indicate future updates are under development (an AWI has been registered), so users should check for later revisions during the standard’s review cycle.

Q: Is it part of a series?

A: Yes — it is part of the broader set of IoT and digital twin standards developed by ISO/IEC JTC 1/SC 41 and is intended to be used alongside architecture (ISO/IEC 30141), interoperability (ISO/IEC 21823) and digital twin framework (ISO 23247 series) documents.

Q: What are the key keywords?

A: Internet of Things, digital twin, vocabulary, terminology, definitions, interoperability, IoT architecture, semantic alignment, JTC 1/SC 41.