Advanced – Non-Functional Testing
Replaceability – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The degree to which a system can replace another specified system for the same purpose in the same environment.
In simple words
How easily this component can swap in for another one doing the same job.
Exam tip
A portability sub-characteristic in ISO 25010.
Related terms
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