The rapid growth of AI traffic and cloud services is driving a major global transformation in the data center market. Global market dynamics serve as a key leading indicator for Japan's future trajectory. In this presentation, drawing on Ciena's practical expertise earned through trust from global hyperscalers and neoscalers, we will explore next-generation infrastructure strategies that achieve both scalability and power efficiency. This will be done through the latest digital coherent optical technology, CPO, and AI-driven multi-layer management, supporting everything from data center interconnect (DCI) to campus and DC-internal networks. (*Neoscalers represent a new growth segment supporting AI workloads)