Advanced – Usability & Accessibility
WCAG A / AA / AAA – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
Three levels of conformance defined by the Web Content Accessibility Guidelines: A (minimum), AA (recommended), and AAA (highest).
In simple words
The three WCAG conformance tiers — most laws require AA.
Exam tip
Regulatory targets almost always ask for WCAG 2.1 (or 2.2) Level AA.
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