Chapter 1 – Fundamentals of Testing
Quality – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The degree to which a component, system or process meets specified requirements and/or user/customer needs and expectations.
In simple words
Two lenses: does it match the spec, and does it delight the user? Both matter.
Exam tip
Quality has explicit (spec) and implicit (user expectation) sides — the exam tests both.
Related terms
- Quality AssuranceQA = process focus — ‘are we working the right way so quality is likely?’.
- Quality ControlQC = product focus — ‘does this actual build meet our quality bar?’. Testing is a QC activity.
- ValidationAre we building the right product? — checking that the system actually meets user needs and intended use.
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