Advanced – Usability & Accessibility
Accessibility (a11y) – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The design and testing of software so that it can be used by people with the widest possible range of abilities.
In simple words
Common abbreviation for accessibility (a + 11 letters + y).
Exam tip
Test with real assistive tech (screen readers, keyboard-only) — not just linters.
Related terms
Practice this term in the ISTQB Mock Test
40 CTFL v4.0 questions, 60-minute timer, instant scoring and chapter-wise breakdown.
Practice in Mock Test