Chapter 2 – Testing Throughout the SDLC
Test Pyramid – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A model describing the ideal distribution of automated tests, with many fast unit tests at the base, fewer integration tests in the middle, and a small number of UI/end-to-end tests at the top.
In simple words
Lots of cheap unit tests, some integration tests, few slow UI tests.
Exam tip
Inverted pyramid (lots of UI, few unit) is an anti-pattern.
Related terms
- Unit TestingSame as component testing: developers verify one small piece of code at a time with fast, automated tests.
- Integration TestingAfter units work alone, you plug them together and check the seams — API calls, data hand-offs, contracts.
- End-to-End Testing (E2E)Test the whole app the way a user would, through the real UI and back-end.
Practice this term in the ISTQB Mock Test
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Practice in Mock Test