YalliYalli is a platform where global users can learn Korean language in their own language.  We currently offer the service in 30 different lanaguages.  In YalliYalli, users can learn Korean language more efficiently.  Using machine learning technology, we identify what each user already knows and doesn’t know through a diagnostic process and recommend contents that they need.  Users will have to pay for what they want/need to learn instead of buying a full course.  In a tutoring service, those who have learned and mastered Korean language can offer 1:1 and 1:N tutoring services.  It is by non-native Koreans for non-native Korean.    To enhance the tutoring service, we have developed our own video conferencing tool for an education setting.  It has a several features such as whiteboard and quiz generation.