With $1 million raised from AppWorks, docosan entered the telehealth market in Vietnam. However, this "rookie" faces many challenges. It can be said that Vietnam is an attractive market for technology startups in the medical field with a scale from 15.6 billion USD in 2018 forecasted to increase to 42.9 billion USD in 2028. spending on medical examination and treatment services in Vietnam is about 7 billion USD/year. However, Vietnam is also known for having a fragmented and inefficient healthcare delivery market. Despite having more than 50,000 clinics across the country, it can be difficult to make an appointment or make an accurate decision about which doctor or clinic will best serve your health needs within a particular price range. Docosan jumped into Vietnam with the hope of meeting the above demand. Accordingly, this company will subdivide the search by both geography and health needs, thereby presenting a set of doctors within parameters for users to compare prices and evaluate. Customers also have the opportunity to choose a doctor and book an appointment. However, in Vietnam, Docosan will face many challenges from previous competitors such as BookingCare, eDoctor, Jio Health, ViCare... In which, Jio Health is the unit that raised the highest capital up to now. with $5 million. In addition, Docosan will also face many other barriers. The first is unclear and complicated administrative regulations that slow down the application of digital in the health sector. This is followed by non-standardized data output across hospitals, and data security remains a concern for healthcare providers, weakening inter-hospital integration and increasing security investment costs of medical startups. Finally, although applications, medical appointment booking services, and remote doctor consultations contribute to many conveniences, the fees are significantly higher than public hospitals.