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Differences between Quality Assurance and Quality Control

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  • Difficulty Level : Medium
  • Last Updated : 15 Nov, 2022
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Quality Assurance: 

Quality assurance is a method of making the software application with less defects and mistakes when it is finally released to the end users. Quality Assurance is defined as an activity that ensures the approaches, techniques, methods and processes designed for the projects are implemented correctly. It recognizes defects in the process. Quality Assurance is completed before Quality Control. 

Quality Control: 

Quality Control is a software engineering process that is used to ensure that the approaches, techniques, methods and processes are designed in the project are following correctly. Quality control activities operate and verify that the application meet the defined quality standards. 

It focuses on examination of the quality of the end products and the final outcome rather than focusing on the processes used to create a product. 
Below are the differences between Quality Assurance and Quality Control:

Quality Assurance (QA)Quality Control (QC)
It focuses on providing assurance that the quality requested will be achieved.It focuses on fulfilling the quality requested.
It is the technique of managing quality.It is the technique to verify quality.
It is involved during the development phase.It is not included during the development phase.
It does not include the execution of the program.It always includes the execution of the program.
It is a managerial tool.It is a corrective tool.
It is process oriented.It is product oriented.
The aim of quality assurance is to prevent defects.The aim of quality control is to identify and improve the defects.
It is a preventive technique.It is a corrective technique.
It is a proactive measure.It is a reactive measure.
It is responsible for the entire software development life cycle.It is responsible for the software testing life cycle.
It pays main focus is on the intermediate process.Its primary focus is on final products.
All team members of the project are involved.Generally, the testing team of the project is involved.
It aims to prevent defects in the system. It aims to identify defects or bugs in the system. 
It is a less time-consuming activity.It is a more time-consuming activity.
Statistical Process Control (SPC) statistical technique is applied on Quality Assurance.Statistical Quality Control (SQC) statistical technique is applied on Quality Control.
Example: VerificationExample: Validation
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