integration testing
compound.compound. a way of checking that different parts of a computer program work correctly when they are joined together. It makes sure that data flows properly between separate pieces of software.
compound. a phase in software testing where individual software modules are combined and tested as a group. Focuses on verifying the interfaces and data communication between integrated components to identify defects in their interaction.
The team started integration testing after finishing the individual features.
After the database and the user interface were completed, the developers performed integration testing to ensure the login screen could successfully retrieve user records.
While unit tests verify the logic of isolated functions, integration testing is essential for uncovering architectural flaws that only emerge when disparate subsystems attempt to exchange complex data structures.
A compound formed from the noun integration, derived from the Latin integratio, and the verbal noun testing. It emerged as a standard procedural term within software engineering as modular programming necessitated a formal stage for verifying combined components.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
The developer performed a unit testing on the whole system.The developer performed integration testing on the whole system.Learners often confuse 'unit testing' (testing small, single parts) with 'integration testing' (testing how parts work together).
Last updated July 22, 2026