Next-Gen Zengin System Postponed to 2028 | Norbert Gehrke | Tokyo FinTech | October 2024

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The Future of Japan’s Payment Infrastructure: The Eighth Generation Zengin System

Japan’s Zengin System, a critical component of the nation’s payment infrastructure, is set to undergo a significant transformation with the development of its eighth generation. This evolution is not merely a technical upgrade; it represents a strategic response to the changing landscape of financial technology, cybersecurity threats, and the need for greater flexibility in payment systems. As we delve into the details of this upcoming system, we will explore its objectives, technological advancements, and the implications for participants and users alike.

A Brief Overview of the Zengin System

The Zengin System, operational since 1973, facilitates real-time gross settlement (RTGS) for interbank transactions in Japan. It has undergone several iterations, with updates occurring approximately every eight years. The seventh generation, which has been in operation since 2015, is now preparing to make way for the eighth generation, scheduled to go live in May 2028. This transition is crucial for maintaining Japan’s position as a leader in financial technology and ensuring the resilience of its payment infrastructure.

Transitioning to an Open System

One of the most significant changes in the eighth generation Zengin System is the shift from a conventional mainframe to an open system architecture. This transition is designed to enhance scalability and adaptability, allowing the system to respond more effectively to emerging technologies and user demands. By adopting an open system, the Zengin System aims to foster innovation and collaboration among financial institutions, technology providers, and other stakeholders.

Strengthening Cybersecurity and Business Continuity

In light of increasing global cyber threats and the need for robust disaster recovery measures, the new Zengin System will place a strong emphasis on business continuity planning (BCP) and cybersecurity. The recent RC23 series failure in October 2022 highlighted vulnerabilities within the existing system, prompting a reevaluation of security protocols. The eighth generation will incorporate advanced cybersecurity measures to protect against potential breaches and ensure the integrity of financial transactions.

To further enhance resilience, the migration from the seventh to the eighth generation will involve parallel operation of both systems. This approach allows for immediate fallback to the seventh generation in the event of any issues with the new system, ensuring uninterrupted service for users.

Key Objectives of the Eighth Generation Zengin System

The overarching goal of the eighth generation Zengin System is to improve convenience for participants and users while achieving high standards in three critical areas: safety, efficiency, and flexibility.

  1. Safety: The new system will maintain the high safety standards established by its predecessor, ensuring that transactions are secure and reliable.

  2. Efficiency: By streamlining or eliminating unnecessary functions, the eighth generation aims to enhance cost efficiency for participants. This focus on efficiency is expected to yield long-term financial benefits for financial institutions and their customers.

  3. Flexibility: The system will be designed to adapt to future changes in the financial landscape, enabling it to accommodate new technologies and evolving user needs.

Expanding Participation in the Zengin System

In a significant move towards inclusivity, the Zengin System will expand its participation criteria to include funds transfer service providers, such as non-banks. This decision, made in September 2022, reflects a broader trend towards open banking and the integration of fintech solutions into traditional banking systems.

To facilitate this expansion, a new connection method utilizing an application programming interface (API Gateway) is being developed. This API Gateway is expected to launch in November 2025, allowing non-bank service providers to connect to the Zengin System and offer their services directly to users.

The Road Ahead

While the timeline for onboarding new participants is ambitious, the actual process may take longer due to the dependency on the API Gateway’s availability. The development of this gateway is crucial for enabling non-bank service providers to join the Zengin System, and its successful launch will mark a significant milestone in Japan’s financial ecosystem.

In conclusion, the eighth generation Zengin System represents a pivotal moment for Japan’s payment infrastructure. By embracing an open system architecture, prioritizing cybersecurity, and expanding participation, the Zengin System is poised to enhance the convenience and efficiency of financial transactions in Japan. As we approach the go-live date in May 2028, stakeholders across the financial landscape will be watching closely to see how these changes unfold and shape the future of payments in Japan.

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