In STEMTM there is a clear distinction between Test level, Test technique and Test Type.
In STEMTM we apply an appropriate technique at each level for designing test scenarios/cases
for a given test type. In STEMTM, the objective is to discover issues as early in the SDLC;
hence applicable test types are executed early in the lifecycle. In STEMTM, a judicious
application of structural (White) and Functional (Black) techniques is applied to
cost-effectively generate optimal test cases. In STEMTM, defects are categorized
into different types.
In STEMTM, different defect types are expected to detect at different stages i.e. different
levels of testing detect different types of defects. The impact of the defect
increases at every level, hence STEMTM ensures that defects escapes are minimized.
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