Optimization of SME Marketing Strategies through Digital Data-Based Customer Profitability Analysis: A Case Study of SMEs in the Former Surakarta Residency. IIJB [Internet]. 2024 Jul. 29 [cited 2024 Nov. 21];1(3):234-45. Available from: https://ejournal.agungmediapublisher.com/index.php/iijb/article/view/43