FROM MONOLITH TO MICROSERVICES: REDESIGNING FINANCIAL DATA SYSTEMS FOR RESILIENCE AND SCALABILITY
DOI:
https://doi.org/10.15662/55f5x746Keywords:
Microservices Architecture, Financial Data Systems, Monolithic Architecture, Cloud-Native Systems, Distributed Systems, Event-Driven Architecture, API Gateways, Financial Technology (FinTech), System Resilience, Scalability, Digital Banking Infrastructure, Data ModernizationAbstract
Financial institutions are experiencing rapid digital transformation driven by increasing transaction volumes, regulatory pressures, real-time analytics requirements, and the need for resilient digital services. Traditional monolithic financial data systems, which integrate all application components within a single tightly coupled architecture, often struggle to meet modern scalability, agility, and fault-tolerance demands. As financial ecosystems evolve toward open banking, cloud-native infrastructure, and real-time data processing, organizations are increasingly transitioning toward microservices-based architectures
This paper examines the architectural transformation from monolithic financial data platforms to distributed microservices-based systems. It explores the limitations of legacy monolithic architectures in areas such as scalability, deployment flexibility, system resilience, and maintainability. The study further analyzes how microservices architectures enable modular service decomposition, independent deployment, domain-driven design, and enhanced fault isolation. By leveraging technologies such as containerization, API gateways, service meshes, and event-driven messaging frameworks, modern financial data systems can achieve improved operational resilience and elastic scalability
Additionally, the paper discusses architectural design patterns, migration strategies, and operational considerations involved in transitioning legacy financial platforms to microservices. Key topics include data consistency management, distributed transaction handling, observability, security frameworks, and regulatory compliance requirements within financial environments. Conceptual models and comparative architectural analyses are presented to highlight performance, scalability, and resilience improvements achieved through microservices adoption
The findings indicate that while microservices introduce architectural complexity, they provide significant benefits in terms of system flexibility, fault isolation, continuous deployment, and real-time data processing capabilities. Properly designed microservices architectures enable financial organizations to build highly resilient, scalable, and adaptive platforms capable of supporting modern digital banking and fintech ecosystems
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