Focusing on the convergence of popular culture and digital platforms in the East Asian context, this book delves into the increasing role of East Asia, not only as the largest cultural market but also as one of the most rapidly developing cultural industries in the global platform economy. Through the analytical framework of the platformization of cultural industries, this volume theoretically and empirically explores how East Asian popular culture and digital platforms have been intertwined and evolved. Analyzing how East Asian media narratives, industries, and audiences are integrated into digital platformization, the book contributes to an enhanced and timely understanding of transnational cultural flows in platform-driven media landscapes of the early 21st century. The comprehensive and significant analyses of the dynamic changes and persistent features of East Asian cultural convergence within the broader ebb and flow of global modernity will make this book an ideal selection for students and researchers of media studies, cultural studies, digital media, Korean studies, Chinese Studies, Japanese studies, East Asian studies, sociology, anthropology, and globalization studies.