Supriyanto, Sarwani, Andry Herawati and Mochammad Arfani 2025. Marketing Marketing Optimization of Sambel Pecel Niki Eco Madiun in the Digital Era: A Study of the Transition from Offline to Online Sales. International Journal of Business and Quality Research. 3, 04 (Dec. 2025), 317-332. DOI:https://doi.org/10.63922/ijbqr.v3i04.2650.