Microsoft has announced a $10 billion investment in Japan, committing to expand artificial intelligence infrastructure and deepen cybersecurity cooperation with the Japanese government between 2026 and 2029.
The announcement was made during a visit to Tokyo by Microsoft Vice Chair and President Brad Smith, who met Prime Minister Sanae Takaichi at her office.
The pledge is substantial. It follows a $2.9 billion two-year investment Microsoft announced in 2024 to bolster Japan’s push into AI and strengthen its cyber defences.
The new commitment more than triples that figure.
Building AI Infrastructure
Microsoft will partner with SoftBank and Sakura Internet to provide AI computing resources, including graphics processing units located in Japan.
The partnerships are already generating market excitement. Shares of Sakura Internet surged as much as 20.2% on Friday following the announcement.
The expanded infrastructure will allow companies and government agencies to keep sensitive data within the country while accessing Microsoft Azure services.
This addresses growing demand for data sovereignty keeping sensitive national and corporate data on Japanese soil rather than routing it through overseas servers.
Japan is the world’s fourth-largest economy, but data centre expansion there is constrained by limited space and relatively expensive electricity.
The new investment aims to work around those constraints through strategic local partnerships.
Cybersecurity and Government Cooperation
Cybersecurity is a central pillar of the deal. Japan will also collaborate with other countries on sharing intelligence regarding cyber threats.
Microsoft will provide AI-powered security tools and enhance joint threat response with Japanese government agencies.
The company said the plan aligns with Prime Minister Takaichi’s goal to boost growth through advanced, strategic technologies while safeguarding national security.
Training One Million Engineers
Workforce development is the third major strand of the investment.
Microsoft will train around one million engineers and developers by 2030, partnering with major Japanese IT companies including NTT Data, NEC, Fujitsu, and Hitachi.
The scale of AI adoption in Japan makes this timely. Since 2024, around one in five working-age people in Japan have been using generative AI tools, compared with the global average of about one in six, according to Microsoft’s AI Diffusion Report.
Brad Smith described the investment as “a response to Japan’s growing need for cloud and AI services.”
