The Directive itself sets legal accessibility requirements in Annex I. Article 15 recognises a presumption of conformity for the requirements covered by an OJEU-cited harmonised standard. It separately provides for technical specifications established by Commission implementing acts, with a presumption limited to the requirements those specifications cover.
EN 301 549 is the European ICT accessibility standard for software, web pages, mobile applications, desktop applications, hardware, and combinations of hardware and software. V3.2.1 is harmonised for the Web Accessibility Directive. ETSI now publishes EN 301 549 V4.1.1 (2026-09). Publication of an edition does not by itself establish an EAA presumption of conformity; verify the relevant Official Journal citation and the requirements it covers.
Do not treat a WCAG checklist alone as full EAA compliance. For web and mobile interfaces, WCAG-style evidence can be useful, but the EAA assessment still has to cover the actual Article 2 category and the relevant Annex I requirements, including product information, support services, payments, identification, e-book, transport, banking, or audiovisual access requirements where applicable.