Advanced – Non-Functional Testing
Latency – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The time delay between the cause and effect of a physical change in the system being observed.
In simple words
The wait time before data starts arriving — network-focused delay.
Exam tip
Latency is one component of response time.
Related terms
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