Quality function deployment (QFD) is a method to transform qualitative user demands into quantitative parameters, to deploy the functions forming quality, and to deploy methods for achieving the design quality into subsystems, processes or subprocesses, and ultimately to specific elements of the over-all end-to-end process. QFD is designed to help focus on characteristics of a new or existing product or service from the viewpoints of market segments, company, or technology-development needs.
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