Harahap, L., Purba, S.D. , Panggabean, J.F.R. and Sirait, K. 2025. Decision Support System in Marketing Strategy Using Data Mining Techniques. Jurnal ICT : Information and Communication Technologies. 16, 2 (Oct. 2025). DOI:https://doi.org/10.35335/jict.v16i2.299.