Chapter 2 – Testing Throughout the SDLC
Interoperability Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
Testing to determine whether a system can exchange information with other systems and use that information correctly.
In simple words
Check two systems can actually talk to each other and understand the data.
Exam tip
Interoperability is a sub-characteristic of compatibility.
Related terms
- Compatibility TestingVerify the app plays nicely with other browsers, OSes or apps.
- API TestingTesting at the service boundary — sending requests to endpoints and asserting responses — without a UI.
- Integration TestingAfter units work alone, you plug them together and check the seams — API calls, data hand-offs, contracts.
Practice this term in the ISTQB Mock Test
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