Link Testing is also called as
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Component Integration Testing
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Component System Testing
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Component Sub System Testing
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Maintenance Testing
Link Testing, which tests the interactions between integrated components, is also known as Component Integration Testing. It focuses on verifying that components can correctly communicate and exchange data. System testing and subsystem testing are broader scopes, and maintenance testing occurs after deployment.
Link Testing (also called Component Integration Testing) is the software testing phase where individually unit-tested components/modules are combined and tested together to verify their interfaces and interactions work correctly — essentially the bridge between unit testing and full system testing. This is distinct from 'Component System Testing' or 'Sub System Testing' (not standard terms) and from Maintenance Testing (testing done after deployment when changes/fixes are made to a live system). The standard STLC/testing-glossary synonym for Link Testing is indeed Component Integration Testing.