What is AUT ?

AUT is nothing but "Application Under Test". After the designing and coding phase in Software development life cycle, the application comes for testing then at that time the application is stated as Application Under Test.

What is Defect Leakage ?

Defect leakage occurs at the Customer or the End user side after the application delivery. After the release of the application to the client, if the end user gets any type of defects by using that application then it is called as Defect leakage. This Defect Leakage is also called as Bug Leakage.