Advanced – Non-Functional Testing
Net Promoter Score (NPS) – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A customer loyalty metric derived from asking how likely users are to recommend the product on a 0–10 scale.
In simple words
A single-question customer loyalty score.
Exam tip
NPS = %Promoters (9–10) − %Detractors (0–6). A common product-quality signal.
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