Chapter 6 – Test Tools
Simulator – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A device, computer program or system used during testing which behaves or operates like a given system when provided with a set of controlled inputs.
In simple words
A model that mimics part of a real system for testing.
Exam tip
Simulators are lighter than emulators but less faithful.
Related terms
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