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System testing:-
System testing of software or hardware is testing conducted on a complete, integrated system to evaluate the system’s compliance with its specified requirements. System testing falls within the scope of black box testing, and as such, should require no knowledge of the inner design of the code or logic.
Release testing:-
Each release undergoes a series of automated and manual testing to ensure the quality of the finished product. In order to maximize our ability to find bugs before users do, we conduct a battery of tests designed to exercise as much functionality as possible. These tests emphasize variety over raw quantity, however with each feature release requiring approximately a week of round-the-clock testing, there is plenty of quantity too