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The development of the internet and social media has encouraged e-commerce companies to utilize digital platforms as a marketing tool, one of which is Shopee through TikTok social media. The high frequency of digital advertising is thought to influence consumer attitudes, especially among Generation Z as active TikTok users. To determine the impact of Shopee's digital advertising frequency on consumer attitudes using promotions as a mediating variable on Generation Z TikTok social media users in Tasikmalaya, this study employed quantitative, descriptive, and verification techniques. A total of 100 respondents were sampled using purposive sampling techniques. An online questionnaire with a Likert scale of 1 to 5 was used to collect research data. Data were analyzed using Structural Equation Modeling-Partial Least Square (SEM-PLS) with the help of SmartPLS 4. The results showed that advertising frequency significantly and positively influenced consumer attitudes and promotions. In addition, promotions can mediate the effect of advertising frequency on consumer attitudes and have a beneficial and significant impact. These results indicate that consumer opinions towards Shopee will be more positive if advertisements are displayed more frequently and supported by appropriate promotions. This study serves as an academic reference and information source for businesses seeking to optimize social media-based digital marketing strategies.

This study aims to comprehensively examine the role of social media influencers in shaping public opinion among university students through a literature review approach. The background of this research is based on the rapid development of information technology and social media, which has given rise to influencers as new communication actors with strong influence in the digital public sphere. Influencers act as opinion leaders who not only deliver information but also frame messages, construct narratives, and disseminate various issues to their audiences. University students are selected as the focus of this study because they represent an active, critical group of social media users who are highly exposed to digital content. The research method employs a literature review by analyzing various national and international scholarly journals relevant to the topics of influencers, social media, and public opinion formation. The findings indicate that influencers have a significant impact on shaping students’ mindsets, attitudes, perceptions, and attention toward social, political, cultural, and lifestyle issues. Factors such as credibility, popularity, and the intensity of interaction between influencers and their audiences play an important role in determining the effectiveness of this influence. Based on these findings, it can be concluded that social media influencers play a strategic and increasingly dominant role in the process of public opinion formation among university students in the era of digital communication.