Component Integration Testing

The testing of individual software components in isolation from the rest of the system. Also known as unit testing, it verifies that each module performs its intended function correctly.

Testing that focuses on the interactions and interfaces between systems, packages, or external services. It verifies that independently developed systems work together as expected in the integrated environment.

A test level that focuses on verifying the interactions between components or systems. It aims to find defects in interfaces and the way integrated parts communicate with each other.