quality assurance
US /ˈkwɑː.lə.t̬i əˈʃʊr.əns/
UK /ˈkwɑː.lə.t̬i əˈʃʊr.əns/
1.
the maintenance of a desired level of quality in a service or product, especially by means of attention to every stage of the process of delivery or production.
:
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Our company has a strong quality assurance program to ensure customer satisfaction.
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The new software underwent rigorous quality assurance testing before release.