This study aims to analyze the marketing strategies, operational mechanisms, and key challenges faced by the Multipurpose Cooperative (KSU) BONA MANDIRI JAYA. A qualitative research approach was employed, utilizing in-depth interviews, direct observation, and document analysis as data collection methods. The results show that the cooperative adopts a direct marketing strategy targeting underserved and remote areas, combined with a personalized approach in monitoring its clients. Despite its growth, the cooperative encounters several challenges, including limited capital, low member financial literacy, non-performing loans, and the need to adapt to digital transformation. To overcome these obstacles, the cooperative implements credit restructuring policies and intensive field monitoring. The study recommends strengthening institutional capacity and adopting digital systems to enhance the sustainability and efficiency of cooperative operations.

This research aims to analyze the efficiency of modern communication systems in transaction activities at Warkop Berkah, a micro-enterprise that has adopted digital technology. The main focus of the research is the implementation of modern communication systems, such as cashless payments via digital wallets, QR codes, and Point-of-Sale (POS) applications, which aim to improve operational efficiency, customer experience, and business competitiveness. This research also identifies various challenges faced in implementing this technology, including the need for employee training, implementation costs, and adaptation by customers who are still accustomed to conventional systems. The research results show that modern communication systems have a significant impact in increasing operational efficiency at Warkop Berkah. Transaction processes become faster, the risk of calculation errors is reduced, and financial transparency increases. In addition, this technology provides a better customer experience by offering convenience, security and comfort, especially for the younger generation who are more familiar with technology.  However, technology adoption also faces obstacles, such as dependence on stable internet connections, resistance from certain customers, and technical challenges in system maintenance. To overcome this challenge, the research recommends several strategies, including intensive training for employees, customer education, diversification of payment methods, and improving technological infrastructure. Real-time monitoring of transaction data is also proposed as a step to optimize operational performance and maximize customer experience. By implementing the right strategy, Warkop Berkah can utilize modern communication systems to support the sustainability and competitiveness of its business. This research contributes to understanding the importance of digitalization in micro and small businesses (MSMEs) in facing the challenges of the digital era. In addition, this study provides practical insights for micro business owners who want to adopt modern technology to increase efficiency and business growth amidst increasingly fierce competition.

This study aims to analyze the role of Instagram as a business communication medium in increasing the sales of VOI Churros, an MSME in Pematangsiantar City. The findings reveal that VOI Churros effectively utilizes Instagram features such as feeds, Reels, Stories, Highlights, collaborations with micro-influencers, and Instagram Insights. These strategies enhance brand visibility, expand audience reach, and foster strong customer interactions. Engaging visual content and creative promotions successfully attract consumer interest, while analytical tools optimize marketing campaigns. The use of Instagram has proven to positively impact sales, with up to a 20% increase in certain promotional campaigns. Moreover, seamless communication with customers through this platform builds loyalty and expands the market reach, even beyond Pematangsiantar. The effectiveness of this strategy is not solely determined by the platform itself but also supported by the quality of products and services provided. This study concludes that Instagram is an efficient marketing tool for VOI Churros to reach a wider market, improve customer engagement, and significantly drive sales growth. Consistent and well-planned strategies are crucial to maintaining this success in the future.

Liquid waste and solid waste originating from hospitals can function as a medium for spreading disorders or disease for staff, sufferers and the community. The research was carried out with the aim of finding out an overview of waste management at Vita Insani Hospital starting from sorting, containerization, lifting, temporary shelter, final disposal site. This research is quantitative research with an observational and descriptive approach, using descriptive research methods, the research was carried out with the aim of creating an objective picture or description of a situation at the Vita Insani Hospital, Pematangsiantar city regarding the management of solid and liquid medical waste. Research results: Overall waste processing at the Vita Insani Hospital, Pematang Siantar City is quite good, however improving the quality of processing is important regarding processing facilities and infrastructure through maintenance of each facility and infrastructure.