System under test

System under test (SUT) refers to a system that is being tested for correct operation. According to ISTQB it is the test object.[1][2][3] The term is used mostly in software testing.[citation needed]

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

The term SUT can also refer to a stage of maturity of the software because system testing is the successor of integration testing in the testing cycle.[clarification needed]

See alsoEdit


  1. ^ "ISTQB Glossary". Retrieved 2018-02-05.
  2. ^ "Don't Stub the System Under Test". Retrieved 2018-02-05.
  3. ^ "SUT (system under test)". (in German). Retrieved 2018-02-05.

External linksEdit