Cahya, V.N.C., Setyanto, R. and Paradise, P. 2025. Analysis of the Effectiveness of Loyalty Membership Programs in Increasing Customer Retention Using Net Promoter Score (NPS) with Information System Support. Eduvest - Journal of Universal Studies. 5, 9 (Sep. 2025), 10974–10983. DOI:https://doi.org/10.59188/eduvest.v5i9.52060.