Is your organization looking for a payment system that is faster, more stable, and more cost-efficient?
Business growth depends on a reliable technology foundation. Today, SCB TechX had the honor of speaking with two senior executives from Siam Commercial Bank Khun Paisal Kiattananan, FEVP, Modernization & Improvement Function, and Khun Petcharat Pimolphan, Head of Payment Solutions & Services who shared their experience using SCB TechX’s Payment Domain. They spoke about the transformation from infrastructure design all the way to delivering services to millions of customers every day.
Key outcomes shared by SCB:
• Boosted processing capacity by 70%, supporting up to 1,300 TPS and reducing operating costs.
• Released new features 2.5× faster, enabling seamless development and near-zero downtime for end users.
• Cloud-native and modular architecture built to support long-term growth.
• Simpler operations, easier scalability, and continuous expansion together with SCB TechX.
What challenges did SCB face before adopting Payment Domain?
Their previous system was a traditional Payment Hub with several limitations:
- High operating and infrastructure costs.
- Difficulty maintaining the system due to not having access to the vendor’s source code.
- Limited scalability because the on-premise infrastructure was not cloud-native, making capacity expansion slow and complicated.
How does Payment Domain improve speed, stability, and scalability?
Payment Domain is designed from the ground up as a cloud-native, modular platform. This lets SCB build and update services independently without affecting core systems. Teams can work in a more agile way, developing, testing, and deploying new services faster and with significantly lower risk. As a result, SCB accelerated feature releases by 2.5× while maintaining near-zero downtime for millions of users.
What business results has SCB achieved after adopting Payment Domain?
The impact is clear. SCB has completely replaced the legacy Payment Hub with Payment Domain and increased transaction processing capacity by 70%, reaching 1,300 transactions per second. Time-to-market for new requirements has been significantly reduced, allowing the bank to introduce new features more quickly with greater flexibility.
These improvements collectively lowered operational costs and strengthened SCB’s overall payment infrastructure.
What’s next for the SCB–SCB TechX partnership?
SCB plans to continue expanding its collaboration with SCB TechX in the coming years. Payment technology is no longer just about processing transactions—it is the engine of financial innovation. New initiatives, such as enhancing payment confirmation flows and consolidating multi-hop processes into Payment Domain, are already planned to further improve customer experience.
How has Payment Domain transformed SCB overall?
The transformation has been substantial. SCB successfully modernized its payment platform to cloud-native technology within only 18 months, achieving the full migration within the planned timeline. This milestone marks a major step forward in the bank’s New Core Banking journey for payment services. SCB extends its appreciation to both the SCB TechX team and internal teams for making this achievement possible.
If your organization needs a technology partner to support your payment systems end-to-end, please contact us at contact@scbtechx.io.

