Confronta i metodi

	Quality Function Deployment	Six Sigma DMAIC
Campo	Disegno sperimentale	Gestione della qualità
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	1966 (Japan); popularised in the West ~1988	2014
Ideatore	Yoji Akao	Motorola; Pyzdek & Keller
Tipo	Structured quality planning and product design method	Structured process improvement methodology
Fonte seminale	Akao, Y. (Ed.). (1990). Quality Function Deployment: Integrating Customer Requirements into Product Design. Productivity Press. ISBN: 978-0915299416	Pyzdek, T., & Keller, P. (2014). The Six Sigma Handbook (4th ed.). McGraw-Hill. ISBN: 978-0-07-184053-9
Alias	QFD, House of Quality, customer-driven engineering, voice of the customer matrix	DMAIC Framework, Six Sigma Process Improvement Cycle, Define-Measure-Analyze-Improve-Control, Altı Sigma DMAIC
Correlati	4	3
Sintesi	Quality Function Deployment (QFD) is a structured method for translating customer needs — the voice of the customer — into specific technical requirements at every stage of product or service development. Originating in Japan in the 1960s, QFD uses a matrix-based tool called the House of Quality to make customer priorities visible, link them to engineering parameters, expose trade-offs, and maintain focus on what customers actually value throughout the design process.	Six Sigma DMAIC is a data-driven, five-phase process improvement methodology — Define, Measure, Analyze, Improve, and Control — used to reduce defects and process variation to fewer than 3.4 defects per million opportunities. Originating at Motorola in the 1980s and systematized by practitioners including Pyzdek and Keller, it is widely adopted in manufacturing, healthcare, finance, and service industries seeking sustained quality gains.