What is the different between “quality control” & “quality assurance”?

Quality Assurance is a managerial concept aimed at assuring high quality of processes, permeating the whole (or essential parts) of business conduct, while involving all professionals in the process.

Quality Control is a corrective concept aimed at evaluating a product (or service provision) in its final result, carried out by some specialized professionals.

Quality-Assurance-vs-Quality-Control

Example:

Editing of text in writing and validation of software in software engineering are forms of Quality Assurance. Proofreading of texts in writing and testing of final software are forms of Quality Control.

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