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Microsoft Pledges $10 Billion to Build AI Infrastructure in Japan

The move anchors local computing for sensitive data under Japan’s sovereignty rules.

Microsoft's Vice Chair and President Brad Smith and Japan's Prime Minister Sanae Takaichi pose before their meeting at the Prime Minister's Office in Tokyo, Japan April 3, 2026. KAZUHIRO NOGI/Pool via REUTERS
SAKURA internet Inc President and CEO Kunihiro Tanaka, SoftBank Corp. President and CEO Junichi Miyakawa, Microsoft Japan President Miki Tsusaka, Microsoft's Vice Chair and President Brad Smith, Japan’s Prime Minister Sanae Takaichi, and Vice Minister of Economy, Trade and Industry Toshiro Ino, pose before their meeting at the Prime Minister’s Office in Tokyo, Japan April 3, 2026. KAZUHIRO NOGI/Pool via REUTERS
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Microsoft to pour $10b into japan for ai expansion, cyber defense, and talent development

Overview

  • Microsoft announced Friday in Tokyo a $10 billion plan for 2026 to 2029 to expand AI data centers and cloud capacity in Japan.
  • Deals with Sakura Internet and SoftBank will place GPU servers inside Japan to keep data onshore and support homegrown large language models.
  • The package widens security ties with government bodies, including the National Police Agency, and sets a goal to train 1 million engineers by 2030 with partners such as NTT Data, NEC, Fujitsu and Hitachi.
  • Investors reacted quickly as Sakura Internet shares jumped about 20 percent, while SoftBank rose modestly and Microsoft edged higher.
  • The Japan push follows fresh commitments in Singapore and Thailand and builds on a 2024 pledge, as rapid data-center growth raises concerns over power supply, land limits and water use.