The purpose of the Defect Prevention Process Area is to identify and analyse common causes of defects across the development life cycle and define actions to prevent similar defects from occurring in the future. .
The Process Area Defect Prevention addresses the practices for:
All defects, whether found during development, testing or in ‘live’, are within scope.
Since defect prevention requires measurement data and measurement processes as inputs, the Defect Prevention Process Area builds on the TMMi Level 4 measurement practices and available measurement data regarding development, testing and product quality.
Process defects that have resulted in outliers and not meeting expected process performance also are within the scope. Since Defect Prevention needs measurement data and measurement processes as an input, Defect Prevention builds on the TMMi Level 4 measurement practices and available measurement data regarding development, testing and product quality.
Some points to consider when looking at this Process Area: