Putri, N. N. D.; Ningsih, A. R.; Nasution, A. S.; Endyra, F.; Ihsan, F.; Masyitah, M. Analysis of Customer Satisfaction at Coffee Shops Using the Quality Function Deployment (QFD) Approach Integrated With the Importance-Performance Analysis (IPA) Method. jestm 2026, 6, 302-315.