E-commerce, while promoting economic growth, also stimulates the continuous transformation, upgrading, and transition of traditional business models. Currently, e-commerce occupies a significant proportion of the global economy, attracting considerable attention from countries worldwide. This is evidenced not only by the planning of national e-commerce development blueprints but also by efforts to achieve international e-commerce cooperation. This chapter introduces the major policies and measures taken by key countries to vigorously develop e-commerce.