Chapter 2 – Testing Throughout the SDLC
Upgrade Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
Testing that verifies an upgrade from one version of a system to another preserves data and functionality.
In simple words
Testing that upgrading from v1 to v2 doesn’t break anything or lose data.
Exam tip
Must cover forward upgrade AND backward rollback paths.
Related terms
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