Advanced – Non-Functional Testing
Installability – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The degree of effectiveness and efficiency with which a product can be successfully installed and/or uninstalled in a specified environment.
In simple words
How smoothly the software installs, upgrades, and uninstalls.
Exam tip
Installation testing catches missing dependencies and permission issues.
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