Future-Proofing Banking IT Systems with Generative AI and BIAN | NTT DATA

Thu, 30 January 2025

Future-Proofing Banking IT Systems with Generative AI and BIAN

Helping Developers and Architects Build Smarter Banking Architectures

At the recent London BIAN Summit, one topic which seemed to dominate the discussion was the potential of Generative AI (GenAI) to transform architecture knowledge management within the BIAN (Banking Industry Architecture Network) framework.

BIAN's standardised approach has long been the cornerstone of banking system architecture, ensuring seamless interoperability and innovation. Now, with the integration of Generative AI, the possibilities for agility, efficiency, and scalability are forever expanding.

So, what does the fusion of BIAN and Generative AI help developers and architects achieve?

The case for merging BIAN and Generative AI

We all know the power of GenAI to sharpen decision-making by providing AI-driven insights that help architects design modular, scalable systems aligned with BIAN principles. But its potential doesn’t end there. GenAI simplifies the transition from legacy systems to BIAN-compliant architectures, reducing the complexity that often deters banks from modernisation efforts.

Generative AI also brings a new level of speed and scalability to deployments, ensuring faster workflows while maintaining adherence to BIAN standards. Perhaps most significantly, it makes optimisation a continuous process, with real-time monitoring and feedback mechanisms that help you evolve your banking systems to meet changing demands.

Redefining service domain design

At the heart of the BIAN framework is its modular service domains, which represent distinct business functions. Generative AI enhances these by analysing historical data and market trends to propose optimised service configurations. It also helps architects proactively plan for future needs, using insights from transaction volumes, customer behaviour, and market conditions to ensure service domains can scale effectively.

Streamlining data integration

Modern banking revolves around the seamless flow of data. GenAI’s strengths make it ideally suited to support here. AI can automate the conversion of legacy data schemas into BIAN-compliant formats, significantly reducing the time and effort required for integration. By identifying bottlenecks and recommending real-time efficiency improvements, it can ensure that data flows smoothly across systems, improving operational reliability and scalability.

Testing and mitigating risks in deployment

Before deploying updates or new services, it’s essential to validate their impact on existing services. GenAI allows architects to simulate different scenarios, helping them explore trade-offs in cost, performance, and scalability.

You can also use AI to stress test different high-traffic scenarios, ensuring systems can cope during peak seasons. These capabilities give architects the confidence to innovate while minimising risks.

Interoperability with legacy systems

Integrating BIAN with legacy systems is one of the biggest challenges we see banks facing day-to-day. Generative AI simplifies this process by automating the design of APIs or middleware to bridge older systems with modern, BIAN-compliant services.

Additionally, AI can detect potential compatibility issues early in the process and offers corrective solutions to reduce the risk of delays that are common in the modernising process.

Strengthening security and compliance

Security and compliance are non-negotiables in modern banking and GenAI has emerged as a critical solution to bolster cyber defences within the BIAN framework. AI can simulate regulatory scenarios, allowing banks to assess the impact of new rules on their systems and make adjustments proactively. GenAI could also identify vulnerabilities in service domains and recommend targeted security enhancements, ensuring banks are protected against evolving cyber threats.

Challenges to consider

Despite this list of exciting use cases, integrating Generative AI into your systems and data comes with its challenges. AI regulations are always changing, and I’ve not yet met a banking leader for whom compliance isn’t front of mind. After all, banks are under pressure to make sure their AI tools comply with stringent privacy and security requirements.

Another challenge is that many banks still rely on outdated infrastructure, which can slow down the full adoption of the BIAN framework. On top of this, a shortage of skilled professionals in both AI and BIAN frameworks may require banks to invest in training or hiring specialised talent to ensure a smooth implementation.

The future of banking network architectures

Having covered the most interesting and useful uses for GenAI within the BIAN integration process, the next question is clear. How do developers and architects put that into action?

Start by assessing your existing architecture to identify areas where Generative AI can deliver the greatest impact: whether it’s automating compliance checks, optimising service domains, or streamlining data flows. Collaborating with industry experts can also help ensure a structured, phased implementation that aligns with your strategic goals and regulatory requirements.

At NTT DATA, we are proud to partner with the BIAN organisation.  With our expertise in Generative AI and deep knowledge of banking IT systems, we help financial institutions navigate the complexities of adopting this transformative integration. Whether you’re a business leader, architect, or developer, we’re here to guide you toward building future-proof IT systems.

If you’d like to know more, take a moment to get in touch and arrange a 45-minute consultation to explore how NTT DATA can support your compliance and trust-building initiatives.


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