Chapter 2 – Testing Throughout the SDLC
Usability Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
Testing to determine the extent to which the software product is understood, easy to learn, easy to operate and attractive to the users.
In simple words
Watch real users try the product to see if the UI actually works for them.
Exam tip
Usability testing is subjective — small sample sizes still give useful results.
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