This research aims to find out how much Product Quality affects Customer Loyalty through Digital Marketing of Somethinc products (Case Study of students at the Islamic University of Malang). This research consists of one independent variable, namely Product Quality and one dependent variable, namely Customer Loyalty and Digital Marketing as intervening variables. The analysis method used is path analysis. The data collection method in this research was to use a questionnaire filled in by respondents, namely UNISMA students who bought and used Somehinc products. The research results obtained based on the Partial Test (t Test) showed: a) there is a significant influence of Product Quality on Digital Marketing, b) there is a significant influence of Product Quality on Customer Loyalty, c) there is a significant influence of Digital Marketing on Customer Loyalty.

The purpose of this SLR is to analyze the application of human resource development in the work environment. The method used in this research is the PRISMA (Preferred Reporting Items for Systematic Review) method. Data sources obtained from Science Direct and Google Scholar for the 2019-2023 period. The results obtained were 236 journals, then data reduction was carried out using inclusion and exclusion criteria, resulting in 11 journals that would be reviewed. The results of this study literature review show the priority of the role and tasks of human resource development in increasing productivity. So that human resource development has a good impact on the company and the employees themselves.