The purpose of this study was to analyze the relationship between buzz and viral marketing strategy on supply chain performance and visit interest of restaurants in Banten Indonesia. This type of research used explanatory with a quantitative approach using SEM-based variance analysis, this is because the dependent and independent variables in this study amounted to more than one so that they could use variance-based SEM to summarize the formulation of the analysis. The study was conducted on 120 restaurant owner respondents in the province. Banten Indonesia. The distribution of the questionnaire in this study was carried out in two stages, namely the distribution of online questionnaires via google form to restaurant owner consumers. The sampling technique used in this study is accidental sampling, namely the determination of the sample based on accidental samples. The results of this study are buzz marketing has a significant effect on supply chain performance, buzz marketing has a significant effect on visit interest, viral marketing has a significant effect on supply chain performance, viral marketing has a significant effect on visit interest, visit interest has a significant effect on supply chain performance.

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.