Introduction

For most of the past decade, payments architecture has forced institutions into a quiet trade-off: build resilience by standardizing on a stable core, or build adaptability by layering scheme-specific systems on top. Both paths now show their limits. The pace of new payment schemes has outrun the first; ISO 20022 and 24/7 expectations have outrun the second.

Institutions need a third option – and the architecture that delivers it is no longer optional.

Consider what a typical Tier 1 bank now integrates with: SEPA Instant, T2, CBPR+, FedNow and TCH RTP in the U.S., Pix in Brazil, UPI in India, alongside domestic RTGS, securities settlement, and an expanding set of digital wallets and alternative rails. Each carries its own specifications, release calendar, and compliance regime. Stacking scheme-specific infrastructure for each one produces the very fragility it was meant to prevent:

Every new release becomes a coordination problem across disconnected systems, and every regulatory change becomes a multi-front program.

ISO 20022 sharpens the point. Richer data structures and end-to-end interoperability are only valuable if the back office can carry them through. For institutions running parallel scheme-specific stacks, the migration stalls at the boundary between modern processing and legacy core systems – exactly where data quality matters most.

This is what makes multi-CSM, multi-format architecture the structural answer rather than a vendor preference.

Centralized processing across clearing systems and message standards collapses the integration surface, turns scheme onboarding into a configuration exercise rather than a rebuild, and lets institutions route transactions dynamically – applying AI to exception handling and throughput where it materially moves the needle.

Interoperability at scale is what removes the resilience-adaptability trade-off.

Montran’s Global Payments Hub (GPH) illustrates the model in production. GPH currently processes for institutions across 40+ countries, supporting almost 170 Payment Market and Capital Market Infrastructures each with its message standards within a single microservices-based, ISO 20022-native platform.

Recent deployments have onboarded new schemes in 2-4 weeks (standard changes) without core banking changes – the operational signal that matters most when regulators set the calendar.

Conclusion

The institutions that will lead the next decade of payments are not the ones running the most schemes. They are the ones who stop treating each new scheme as a separate program. As the ecosystem expands, unified processing is what keeps continuity compatible with constant change.

Nicolas Dykmans Global Head, Business Development for FI Solutions Montran

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