Rendy Al Barisya, Natanael Pakpahan and Rahmat Alamsyah Harahap 2025. The Effect of Promotion Strategies, Service Quality, and Responsibility on the Success Rate of Small and Medium Enterprise Actors at the Uptd PLUT Sumut. International Journal of Economics, Business and Innovation Research. 4, 04 (Jun. 2025), 672-687. DOI:https://doi.org/10.63922/ijebir.v4i04.1990.