In the roughly three years since OpenAI released ChatGPT in November 2022, generative AI has become a globally ubiquitous service. Today, fierce competition is unfolding to improve AI performance and develop innovative AI services. This surge in demand has put a significant spotlight on data centers as the infrastructure for AI servers, leading to a major shift in required technical specifications. The 2026 edition of Impress’s annual "Data Center Research Report" analyzes the domestic market's evolution toward AI-driven services, summarizing trends among both providers and enterprise users. This lecture will draw from the report’s findings to introduce the latest movements and future trajectory of the Japanese data center market.