In Systems Integration, the terms Validation and Verification serve different purposes.
In the context of systems integration practices, 'Verification' means the process of providing undisputed evidence that the system meets the requirements. Thus, 'performing the system verification' means proving that we are 'building the system right'. Not to be confused with Validation, which focuses on developing a better understanding of the customer requirements to ensure that we are 'building the right system'.
Verification is a continuous process spanning the entire development and certification programme for a system. Throughout the development phase, several activities are being performed to ensure that the design will or does meet the requirements. If the activity uses the same product configuration as the production article, then evidence generated by the activity can be used for the purpose of verification.
