Digital Daesung is Korea's leading educational company that provides the highest quality educational content. It provides total education services to elementary, middle, high school and college students, from online and offline lectures to testing, essay writing, and college entrance consulting.

Megastudy is a South Korean online education service company. Through its headquarters and affiliates, it is conducting publishing content projects, online and offline education projects, group meals projects, and investment projects for elementary, middle and high school students and ordinary adults.