Financial services firms rely heavily on mainframes, with more than 90 percent of the top global banks and insurers using them for mission-critical operations. These systems process 90 percent of credit card transactions and 95 percent of ATM transactions, providing unmatched security and transactional speed.
However, mainframes are starting to create headaches for the financial services sector. The biggest challenge is the “COBOL cliff” — software developers familiar with the legacy programming language are retiring. Many mainframe teams are understaffed, and few professionals are available to fill those talent gaps.
New regulations require banks to recover from system failures within minutes, which requires more agile, modern architectures. Demand for real-time payments and mobile-first services requires legacy systems to connect seamlessly with digital platforms. Mainframes are also unable to support AI for real-time fraud detection and improved data analytics.
Modernization is now considered a business imperative to maintain competitiveness. However, financial institutions can’t tolerate the risk associated with a “rip and replace” approach. Instead, they’re shifting toward hybrid strategies that integrate legacy systems with modern technologies.
Financial institutions have traditionally relied on monolithic architectures that process transactions in batch mode. They can’t keep up with their newer, cloud-native competitors who can scale seamlessly and respond quickly to market opportunities and changing security and compliance requirements.
Making the transition without creating unacceptable risk requires a phased approach. Many institutions use a “two-speed IT” model, keeping stable legacy operations on-premises while building agile, event-driven digital banks in the cloud. They’re also rehosting, refactoring or retiring systems in a step-by-step process to ensure stability and minimize operational disruptions.
Financial institutions are breaking down complex functions into independent, modular services. These services are hosted in containers to ensure they can scale elastically based on demand. Instead of services waiting for direct responses (synchronous), they communicate via “events” sent through high-throughput messaging platforms. These decoupled microservices and asynchronous event streams create a more agile environment.
Financial services firms aren’t abandoning their mainframes. Recent studies show that 47 percent of firms are increasing their mainframe investments, and another 43 percent are holding their investments steady. However, cost optimization is also a top priority given the high operational overhead of mainframes.
Many firms are moving to a hybrid cloud model, using APIs as the “glue” for integrating core functions with third-party apps and external fintech partners. Cloud-native platforms provide more flexible cost structures while enhancing operational efficiency and enabling scalability.
Security and compliance are, of course, a major focus. Mainframes play a key role in protecting sensitive data and ensuring compliance with increasingly stringent regulations. However, cloud platforms enable real-time monitoring and automated regulatory reporting (RegTech).
The cloud also facilitates the adoption of AI tools for real-time fraud detection. Event-driven architectures allow security systems to analyze transactions as they happen. If a suspicious pattern is detected, an automated service can freeze an account instantly rather than waiting for an overnight batch report.
Modernization enables financial services firms to meet customer demand for instant transaction processing and more personalized digital services. For example, a customer spending at an airport can trigger a real-time push notification for travel insurance.
Additionally, modernization helps reduce the risks associated with outdated IT and enhances resilience against cyber threats. Microservices allow financial institutions to update specific compliance logic independently, ensuring they can adapt to new laws without re-engineering the entire system. Event-driven architectures also provide fault tolerance — if one service fails, others remain unaffected, preventing platform-wide outages.
Technologent offers an array of services to help financial services firms modernize their legacy systems while managing risk. Our consultants can help develop the business case for modernization and validate existing and new solution options. Our services span hybrid cloud architectures, security, compliance and governance. We also provide a structured framework for AI implementation. Contact us to schedule a confidential consultation.