This research aims to analyze the relationship between digital marketing on quality service, digital marketing on sales performance, quality service on sales performance, and digital marketing on Sales performance through quality service. The research methodology is a quantitative method and divided into research design and research subjects, data collection methods, and analysis methods. The study is conducted on 125 small and medium (SMEs) in Banten, Indonesia in the digital region. The study uses primary data based on the results of distributing online questionnaires to 125 managers of SMEs in Banten who were selected by simple random sampling. The questionnaire was designed online, and each question/statement item was given five answer options, namely: strongly agree (SS) score 5, agree (S) score 4, neutral / doubt (N) score 3, disagree (TS) score 2, and strongly disagree (STS) score 1. The method for processing data is by using PLS and using SmartPLS version 3.0 software. Based on data analysis by SmartPLS, digital marketing has a significant effect on quality service, digital marketing has a significant effect on sales performance, quality service has a significant effect on sales performance, and digital marketing significantly affects sales performance through quality service in the digital era.