Define quality assurance?

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.

QA (Quality Assurance) is the method which prevents or protect the mistakes and the defects in the products which are manufactured and avoid the problem when the product or service is delivered to the customer.

Explanation:

Quality Assurance is the fragment or part of the quality management which aim on offering confidence to an individual that the quality requirements is accomplished.

The quality assurance will be used as: Execution of structured and inspection testing as a quality assurance measure.

It involves the activities of the procedural and administrative and that is executed in the quality system so that the requirements and objectives for a product or service will be accomplished.

It is the process in which the systematic measurement, monitoring the processes and comparison with a standard, and linked the feedback loop which confers the error prevention.