Chapter 2 – Testing Throughout the SDLC
Feature Flag – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A technique that allows a feature to be turned on or off in a running system without deploying new code, used to control rollout and enable testing in production.
In simple words
A switch in config that hides or shows a feature to users.
Exam tip
Feature flags enable trunk-based development and safe canary releases.
Related terms
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