Defect Management

The life cycle of a defect can be summarized as follow: 

When a defect is reported during software development process, it is usually logged by tester into bug tracking system or defect management system. The earlier the defect is rectified, the less cost it could bring to project.

Defect management is the practice of managing defect throughout its life cycle with collaboration of multiple teams aiming at improving software quality by defect detection and defect prevention.