Mizuho Bank has started using the Boomi Enterprise Platform to support its transition to ISO 20022 and improve how it manages payment instructions across the Asia Pacific region. The bank aims to make the shift to the industry’s new messaging standard easier for corporate clients while also updating its internal systems for future growth.
Mizuho Bank, which is part of Mizuho Financial Group, operates corporate, retail, and investment banking services worldwide. As the global financial sector moves from older SWIFT MT messages to the ISO 20022 format, the bank saw the transition as a chance not only to meet regulatory requirements but also to improve how clients interact with its services.
“We knew the ISO 20022 transition had the potential to disrupt our clients’ day-to-day operations. Instead of pushing that complexity onto them, we decided to own it,” said Andy Nam, regional CIO of Mizuho Bank. “This project allows our clients to continue using their familiar file formats while we handle the conversion invisibly in the background. That kind of simplicity requires serious backend sophistication.”
Instead of asking clients to upgrade their own systems, Mizuho built a self-service portal that accepts both old and new formats. The system handles translation, validation, and secure delivery of payment instructions. According to the bank, the goal is to reduce technical work for clients while keeping services stable during the industry-wide change.
With Boomi’s low-code platform, Mizuho replaced various file conversion tools that were previously used across different APAC branches. The new setup provides a single interface where clients can upload or manually enter payment data. Boomi’s technology then manages the conversion to ISO 20022 and processes the request. This approach has simplified onboarding and reduced the operating effort required to support different formats.
The bank said the new platform has shortened client onboarding from months to weeks and has helped make client acquisition more efficient. The system is now live in major APAC markets and is being expanded to more locations across the region.
“Getting the project live in a rapid timeframe was a big win, but the real achievement is what it has enabled,” said Nam. “We have built a scalable foundation that not only meets current compliance needs but also adapts to the next wave of digital banking transformation.”
The bank views the project as a model for how financial institutions can manage regulatory changes while maintaining service reliability. Mizuho plans to expand the system with more digital tools to support a wider range of corporate clients as regional regulations and payments technology continue to change.
“Payments modernization does not happen in a vacuum, it requires orchestrating old and new systems in a way that does not disrupt mission-critical services,” said David Irecki, CTO for Asia Pacific and Japan at Boomi. “Mizuho Bank’s approach blends compliance with client-centricity. By embedding ISO 20022 into a flexible integration strategy, they have future-proofed their operations and unlocked new ways to innovate at scale.”