This is one of the most commonly asked question in software testing. Check the difference between Quality Assurance and Quality Control below:
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Quality Assurance
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Quality Control
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A planned and systematic set of activities necessary to provide adequate confidence that requirements are properly established and products or services conform to specified requirements.
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The process by which product quality is compared with applicable standards; and the action taken when nonconformance is detected.
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An activity that establishes and evaluates the processes to produce the products.
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An activity which verifies if the product meets pre-defined standards.
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Helps establish processes.
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Implements the process.
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Sets up measurements programs to evaluate processes.
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Verifies if specific attribute(s) are in a specific product or service
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Identifies weaknesses in processes and improves them.
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Identifies defects for the primary purpose of correcting defects.
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QA is the responsibility of the entire team.
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QC is the responsibility of the tester.
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Prevents the introduction of issues or defects
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Detects, reports and corrects defects
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QA evaluates whether or not quality control is working for the primary purpose of determining whether or not there is a weakness in the process.
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QC evaluates if the application is working for the primary purpose of determining if there is a flaw / defect in the functionalities.
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QA improves the process that is applied to multiple products that will ever be produced by a process.
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QC improves the development of a specific product or service.
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QA personnel should not perform quality control unless doing it to validate quality control is working.
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QC personnel may perform quality assurance tasks if and when required.
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