Case Study: Mizuho Information & Research Institute achieves secure, compliant global ICT and accelerated core-banking rollout with NTT Communications' Arcstar Universal One

The next-generation ICT infrastructure for a mega bank Comprehensive, accelerated SI and operational support

Mizuho Information & Research Institute (part of Mizuho Financial Group) needed a next‑generation global ICT infrastructure to support its “One Mizuho” strategy while meeting rapidly evolving local regulatory and cyber‑security requirements. With limited internal resources and growing demands for higher transaction speed and system availability, Mizuho sought a partner that could build, operate and centrally manage a secure, compliant global network.

Partnering with NTT Communications and its Arcstar Universal One managed services, Mizuho implemented centralized global management, end‑to‑end encryption, 24/7 support and IP‑level performance monitoring, and used NTT data centers in Asia as regional hubs. The solution accelerated deployment of a new core banking platform, improved incident response and user support, ensured compliance with local regulations, and provided a scalable foundation for future cloud integration and global expansion.

Mizuho

Yasumasa Mukai

Senior Managing Director