So sánh phương pháp

	Triển khai chức năng chất lượng	Six Sigma DMAIC
Lĩnh vực	Thiết kế thí nghiệm	Quản lý chất lượng
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1966 (Japan); popularised in the West ~1988	2014
Người khởi xướng	Yoji Akao	Motorola; Pyzdek & Keller
Loại	Structured quality planning and product design method	Structured process improvement methodology
Công trình gốc	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
Tên gọi khác	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
Liên quan	4	3
Tóm tắt	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.