A Kano survey is a market research tool used to measure customer satisfaction and identify the features and attributes of a product or service that are most important to customers. It is based on the Kano model, which categorizes customer preferences into five categories: must-be, one-dimensional, attractive, indifferent, and reverse. By understanding these preferences, businesses can prioritize their efforts and resources to meet customer needs and expectations, ultimately leading to increased customer loyalty and retention. The Kano survey is a valuable tool for businesses looking to gain a competitive edge and improve their overall customer experience.