This research is motivated by widespread business networks in the business world and raises fierce business competition. To respond to this, the author conducted a business network research conducted by MSMEs Yoi Milk. The objectives that must be achieved in this study include: (1)  to find out what the founders of Yoi Milk did to build their business network. (2) to find out how marketing is done by Yoi Milk. (3) to find out how the financial management is carried out by Yoi Milk in order to get profits in accordance with what the business wants. This research was conducted directly by the founder of Yoi Milk. This research seeks business networks carried out by Yoi Milk business entrepreneurs to decide on product development starting from marketing carried out to products marketed to consumers. This research uses qualitative methods, one of which is interviewing Yoi Milk business actors about marketing, sales, and financial management carried out for profit.

The purpose of this research is to find out how digital marketing is used in building business networks. This research uses descriptive qualitative research methods. The object of this research is the Hot MieRoll business. The results of this research are digital marketing that the HotMie Roll business can use as an effort to build a business network is creating a Google Business account, creating social media as a marketing medium and creating photo or video content which will later be uploaded on social media by following current trends.