ISO IEC 24751-4-2023 PDF

Full title and description

Information technology — Individualized adaptability and accessibility in e-learning, education and training — Part 4: "Access for all" framework for individualized accessibility and registry server application programming interface (API). This part specifies an Access for All (AfA) concept registry service including registry and submission requirements, a JSON data format for AfA concept records, and a RESTful API for manipulating registry entries.

Abstract

This standard defines the AfA concept registry: requirements on registries and on concept submissions; a JSON exchange format for AfA concept records; and a set of RESTful operations (request/response parameters and response codes) that allow external clients to create, read, update and delete AfA concept entries on registry servers. The document supports interoperable sharing of preference, resource and context concepts used to match learners' individual accessibility needs with appropriate digital resources.

General information

• Status: Published.
• Publication date: February 2023.
• Publisher: ISO/IEC (International Organization for Standardization / International Electrotechnical Commission).
• ICS / categories: 03.100.30; 35.240.90.
• Edition / version: Edition 1 (2023).
• Number of pages: 20.

Scope

Specifies an AfA concept registry service to support individualized accessibility in e‑learning, education and training. The standard covers registry requirements, requirements on concept submissions, a JSON data format for exchanging AfA concept records between registry servers, and a RESTful API for external clients to manipulate registry entries. This publication replaces the earlier technical specification ISO/IEC TS 24751-4:2019 and formalizes the AfA registry service and its interfaces for interoperable implementations.

Key topics and requirements

• Definition of the Access for All (AfA) framework and core concepts: preference, resource and context models.
• Requirements and constraints on AfA registries (structure, conformance and management requirements).
• Requirements on concept submissions (mandatory fields, metadata, validation rules).
• JSON data format / schema for AfA concept records to enable exchange between registry servers.
• RESTful API specification: request/response parameters, supported operations, and response codes for registry manipulation by external clients.
• Conformance and use cases to guide implementers (examples for matching learner needs to resources).
• Interoperability guidance for integrating AfA registries with LMSs, content repositories and assistive-technology components.

Typical use and users

Used by standards implementers, accessibility architects, learning platform and LMS developers, registry operators and content providers who want to support individualized accessibility. Typical implementations include AfA registry services, integrations between learning management systems and concept registries, and vendor tooling that maps learning resources to learner preferences and context for improved accessibility and personalization.

Related standards

Part of the ISO/IEC 24751 series on individualized adaptability and accessibility in e-learning (notably Parts 1, 2 and 3). This Part 4 supersedes ISO/IEC TS 24751-4:2019 and complements ISO/IEC 24751-1 (framework and reference model), ISO/IEC 24751-2 (personal needs and preferences), and ISO/IEC 24751-3 (digital resource description).

Keywords

Access for All; AfA; concept registry; registry API; JSON; REST; accessibility; individualized adaptability; e-learning; learner preferences; interoperability; ISO/IEC 24751.

FAQ

Q: What is this standard?

A: An international standard (ISO/IEC 24751-4:2023) that specifies an Access for All (AfA) concept registry service and its registry-server API to support individualized accessibility in e‑learning, education and training.

Q: What does it cover?

A: It covers registry requirements, requirements on concept submissions, a JSON data format for AfA concept records, and a RESTful API (operations, parameters and response codes) to enable interoperable manipulation and exchange of accessibility-related concepts.

Q: Who typically uses it?

A: LMS and learning-technology developers, accessibility specialists, registry operators, content providers, and organizations implementing personalized accessibility or interoperable AfA services.

Q: Is it current or superseded?

A: Current (published February 2023). It replaces ISO/IEC TS 24751-4:2019.

Q: Is it part of a series?

A: Yes — it is Part 4 of the ISO/IEC 24751 series on individualized adaptability and accessibility in e‑learning, alongside Parts 1–3 which cover framework/reference model, personal needs and preferences, and digital resource description.

Q: What are the key keywords?

A: Access for All, AfA, registry, API, JSON, REST, accessibility, individualized adaptability, e‑learning, learner preferences, interoperability.