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System under test

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System under test (SUT) refers to a system that is being tested for correct operation. The term is used mostly in software testing.

A special case of a software system is an application which, when tested, is called an application under test.

The term SUT means also a stage of maturity of the software, because a system test is the successor of integration test in the testing cycle.

The SUT refers to what are the items, part of the whole system, which are part of the test. Linked to the notion of test is the Test harness which is all the means required to perform the test activities

See also

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