Most people get confused when it comes to pin down the differences among Quality Assurance, Quality Control, and Testing. Although they are interrelated and to some extent, they can be considered as same activities, but there exist distinguishing points that set them apart. The following table lists the points that differentiate QA, QC, and Testing.
| Quality Assurance | Quality Control | Testing |
|---|
| QA includes activities that ensure the implementation of processes, procedures and standards in context to verification of developed software and intended requirements. | It includes activities that ensure the verification of a developed software with respect to documented (or not in some cases) requirements. | It includes activities that ensure the identification of bugs/error/defects in a software. |
| Focuses on processes and procedures rather than conducting actual testing on the system. | Focuses on actual testing by executing the software with an aim to identify bug/defect through implementation of procedures and process. | Focuses on actual testing. |
| Process-oriented activities. | Product-oriented activities. | Product-oriented activities. |
| Preventive activities. | It is a corrective process. | It is a preventive process. |
| It is a subset of Software Test Life Cycle (STLC). | QC can be considered as the subset of Quality Assurance. | Testing is the subset of Quality Control. |
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