noun
implementation under test; IUT
Technical term in software testing; refers to the specific system, component, or code being tested.
試験対象のコードに対して単体テストを実行する。
Run unit tests against the implementation under test.
試験対象が正しく動作することを確認する。
Verify that the implementation under test works correctly.
More general term for 'test target'; 試験対象 is more formal and often used in standards or documentation.
Compound of 試験 (test) and 対象 (target, object). A straightforward modern technical term.