19-1-2016-integration-testing-what-is-it-1
System Integration Testing

System integration testing (SIT) or integration testing is a type of software testing that allows software developers and engineers to evaluate the interactions between various modules within a single, unified system. In software systems, a module is a file that contains a specific function. Software applications comprise multiple modules, and each performs a distinct function. Integration testing makes it easier for engineers to ensure that the software they create functions properly.