Breaking the Chains: How AI is Revolutionizing Legacy Code Migrations in Banking

September 30, 2024

In the fast-paced banking world, outdated systems are like anchors, dragging down innovation and stifling progress. Financial institutions have struggled under the weight of legacy architectures for too long—bulky, costly, and often riddled with security vulnerabilities. The reality is stark: inefficiencies in these systems slow down transaction processing, hinder automation, and ultimately lead to disappointing customer experiences. But what if I told you there’s a way to flip the script?

Enter the era of AI-driven modernization, where what once took a decade can now be accomplished in a fraction of the time. For instance, recently at Globant we collaborated with  a leading bank and transformed a COBOL-based core system into sleek Java microservices in just 105 hours. Yes, you read that right—over 11,600 lines of outdated code reengineered into nearly 5,000 lines of efficient, modern architecture in just a few weeks. This isn’t just a win for the bank; it’s a landmark moment for the entire industry.

Our innovative approach, powered by Agentic AI systems, offers a compelling blueprint for how we can tackle the daunting challenges of legacy migrations. By leveraging AI to automate the analysis, documentation, prototyping, and testing processes, we’re not just speeding things up—we’re enhancing the quality and security of the final product. The numbers speak for themselves: an 80% acceleration in Java coding, a 77% boost in code documentation efficiency, and an 86% improvement in unit testing speed. 

Yes, there are tools that facilitate legacy-to-modern transformations, but they often retain the monolithic architecture, failing to deliver the full benefits of modernization. Our approach, while requiring some accelerated human intervention, is different. We first extract the valuable knowledge embedded in the legacy code as documentation, enabling us to build modern architectures in any target technology. This decoupling of knowledge and architecture allows us to leverage existing insights while designing modern, flexible systems.

So, why does this matter? Because in a world where customer expectations are rising faster than ever, banks can no longer afford to be held back by outdated systems. Modernization isn’t just a nice-to-have; it’s essential for survival. Without a doubt AI is presenting every industry with a massive opportunity and for the banking industry, this means not only keeping the pace with technological advancements but also leading the charge into a more efficient, agile future.

Now, let’s get real for a moment. Transitioning from legacy systems isn’t without its challenges. Complex code bases, stakeholder buy-in, and maintaining operational integrity are all significant hurdles. But with the right approach—one that embraces AI—we can navigate these challenges more effectively. The collaboration between Globant and the bank demonstrates that with a solid strategy, even the most daunting legacy code migrations can be tackled head-on.

As we move forward, we must embrace this transformative potential. The banking sector has a golden opportunity to redefine itself, improve customer experiences, and become more competitive in the digital landscape. The time for action is now. Let’s harness the power of AI to break free from the chains of legacy systems and embark on a journey toward a smarter, more responsive banking ecosystem. The future is bright, and it’s time for the financial industry to seize it.

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The Data & AI Studio harnesses the power of big data and artificial intelligence to create new and better experiences and services, going above and beyond extracting value out of data and automation. Our aim is to empower clients with a competitive advantage by unlocking the true value of data and AI to create meaningful, actionable, and timely business decisions.