Business legality is a crucial element in the development of Micro, Small and Medium Enterprises (MSMEs) in Indonesia. Karangsari Village, as one of the MSME centers, is facing challenges in adopting Business Identification Numbers (NIB) and implementing digital marketing. This research aims to identify the impact of implementing NIB on MSMEs in Karangsari Village and explore the obstacles and opportunities in its implementation. The methods used are case studies and field surveys. The research results show that although NIB can improve legality and market access, low digital literacy is a major obstacle. It is hoped that the socialization and training carried out in Karangsari Village can increase understanding and adoption of NIB and digital marketing by MSMEs, so as to strengthen their competitiveness in the market.

Shopping activities have become a dominant phenomenon in people's lives, one of which is among students. Students are an important segment in society, so they have become a shopping preference that deserves to be understood more deeply. The aim of this research is to analyze student behavior and preferences from shopping experiences. This research uses a descriptive quantitative method with data collection using a questionnaire with closed answers. The questionnaire was filled in by 152 respondents spread across various universities in Indonesia. The research results show that the e-commerce applications that are often used by students are Shopee and Tokopedia. Students prefer to shop through online shops because the prices offered are more affordable than conventional shops. Apart from that, if you shop via an online shop, the activity time is shorter and more efficient. In the online shop, the products offered are quite diverse and varied, and there are lots of promotions on offer so that they attract the attention of buyers. Online shops are used by students to buy fashion and skincare products because the products offered are more diverse compared to offline shops. Based on this data, it can be understood that students choose to shop through online shops using the Shopee and Tokopedia applications and choose to shop for fashion and skincare.