(1) Quality Assurance is a planned and systematic set of activities to ensure that variances in processes are clearly identified, assessed and improving defined processes for fulfilling the requirements of customers and product or service makers.
1. Actions taken to ensure that standards and procedures are adhered to and that delivered products or services meet performance requirements.
2. The planned systematic activities necessary to ensure that a component, module, or system conforms to established technical requirements.
3. The policy, procedures, and systematic actions established in an enterprise for the purpose of providing and maintaining a specified degree of confidence in data integrity and accuracy throughout the life cycle of the data, which includes input, update, manipulation, and output.
In developing products and services, quality assurance is any systematic process of checking to see whether a product or service being developed is meeting specified requirements. A quality assurance system is said to increase customer confidence and a company's credibility, to improve work processes and efficiency, and to enable a company to better compete with others. Today's quality assurance systems emphasize preventing and/or catching defects before they get into the final product.
"Work done to ensure that Quality is built into work products, rather than Defects." This is by (a) identifying what "quality" means in context; (b) specifying methods by which its presence can be ensured; and (c) specifying ways in which it can be measured to ensure conformance.
(2) ISO 9000:2005
part of quality management (3.2.8) focused on providing confidence that quality requirements will be fulfilled"
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