Agile Tester Extension
Power of Three – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The practice of having a developer, tester and business representative discuss a user story together before implementation to reach shared understanding.
In simple words
Also called Three Amigos — dev + tester + business talk each story through before it's built.
Exam tip
The Three Amigos meeting is the practical enactment of the whole-team approach.
Related terms
- Three AmigosBusiness, dev and tester talk through a story together before coding starts.
- Whole-Team ApproachQuality is everyone's job — testers, devs, PO, ops all own it together.
- Behavior-Driven Development (BDD)BDD writes tests as plain-English scenarios so business, devs and QA agree on what the feature should do before code is written.
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