Jang Jaeung (M) is an economic journalist at Korea's major press company, Dong-A Ilbo, and is in charge of producing business reviews. He introduced an agile methodology that was unfamiliar in Korea through this business review and discussed many examples of domestic companies trying to convert themselves into agile businesses. He has planned and operated Agile Korea Alliance and Agile Scale-Up Academy since 2019 and has lectured as an agile instructor. He co-authored Colorful Africa and Winner’s Law in a Chaotic World.