Chapter 2 – Testing Throughout the SDLC
Stability Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A type of reliability testing that evaluates whether the system remains stable over extended periods of continuous operation.
In simple words
Run the system for a long time under normal load and watch for degradation.
Exam tip
Also called soak or endurance testing.
Related terms
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