Quality Function Deployment (QFD) is a systematic process for gathering customer requirements and ensuring they are incorporated into the design and planning of a new product or service. Here's how it works:

Customer Voice: QFD begins with collecting and understanding customer needs and expectations, often referred to as the "voice of the customer."

House of Quality: These needs are translated into design requirements through a tool called the House of Quality, which helps prioritize features based on customer importance.

Cross-Functional Teams: QFD involves cross-functional teams to ensure that all relevant perspectives (e.g., marketing, engineering, manufacturing) are considered in the design process.

Integration: The process ensures that customer needs are systematically integrated into product design, reducing the risk of missing key features or quality attributes.

QFD is thus a comprehensive approach to ensuring that customer needs are central to product development from the outset.