<p><em>E-commerce is one type of electronic business mechanism that focuses on individual-based business transactions using the internet as a medium of exchange of goods or services so that many companies compete to provide excellent online services to maintain customer loyalty. The purpose of this study is to test the influence of electronic service quality and customer trust on the loyalty of online customers</em><em> purchase on e-commerce sites to marketplace users in the City and Regency of Bogor West Java and customer satisfaction as an intervening variable. The sample of this study are 350 millennial respondents, questionnaires were circulated using Google Forms to online buyers who use marketplace facilities in Bogor city and district, West Java Province, Indonesia. Furthermore the data was analyzed statistically using a partial least square - structural equation model (PLS-SEM) approach using SmartPls. 3.0 programs. The results showed that the quality of electronic service has a positive and significant effect on customer satisfaction and customer loyalty, customer trust has a positive and significant effect on customer satisfaction but does not affect customer loyalty, Customer Satisfaction affects customer loyalty. According to the findings, marketplace should expand its offerings and partner with other leading online service providers.</em></p><p><em> </em></p><p> </p>