In late July 2026, NVIDIA and Amkor reached a multi-year strategic agreement worth $1.5 billion, prepaying to lock in Amkor's advanced packaging and testing capacity in Arizona, U.S. After the announcement, Amkor shares surged about 15% after hours. This article reviews the deal's key terms, spillover effects of the prepaid capacity model, U.S. efforts to shore up advanced packaging, and the event's far-reaching impact on global OSAT landscape and Asia-Pacific semiconductor supply chains.