Microservice Modernization for Enterprise Service Migration Using AWS Cloud Architecture (Published)
Enterprises operating large, monolithic service-oriented platforms increasingly face constraints in scalability, deployment velocity, and operational resilience. This paper presents a structured approach to modernizing enterprise monolithic applications into cloud-native microservices deployed on Amazon Web Services (AWS). We propose a six-phase migration methodology grounded in domain-driven design and the strangler fig pattern, enabling incremental extraction of business capabilities without disrupting production systems. A reference AWS architecture is presented, combining Amazon ECS and EKS for container orchestration, Amazon API Gateway for edge routing, AWS App Mesh for service-to-service communication, and a polyglot persistence layer spanning Amazon Aurora, DynamoDB, and ElastiCache. The proposed methodology was evaluated through a case-style implementation involving decomposition of a legacy order-management monolith into independently deployable services. Empirical results indicate a 68% reduction in average response time, a twelvefold increase in deployment frequency, and substantially improved mean time to recovery compared to the legacy baseline. The paper also examines cost implications, security controls, and organizational readiness factors that influence migration outcomes, concluding with recommendations for enterprises planning similar modernization initiatives.
Keywords: AWS, Cloud-Native Architecture, DevOps, Legacy modernization, container orchestration, domain-driven design, enterprise migration, microservices, service mesh, strangler fig pattern
Microservices Architecture in Financial Services: Enabling Real-Time Transaction Processing and Enhanced Scalability (Published)
Microservices architecture is fundamentally transforming financial services by enabling real-time transaction processing and enhanced scalability. The transition from monolithic to microservices-based systems represents a paradigm shift in how banking and payment platforms are designed, deployed, and operated. Financial institutions implementing microservices architecture benefit from improved development velocity, better resource utilization, and enhanced system resilience. Domain-driven design provides an effective framework for decomposing complex financial systems into coherent, business-aligned services that can evolve independently. Event-driven patterns enable real-time transaction processing capabilities that meet modern customer expectations while maintaining the security and reliability required in financial contexts. Cloud-native deployment models, containerization, and orchestration technologies further enhance these benefits by providing consistent environments, automated scaling, and simplified lifecycle management. Despite regulatory and operational challenges, financial institutions are increasingly adopting these architectural approaches to address competitive pressures and evolving customer expectations. The combination of microservices architecture, real-time processing capabilities, and cloud-native deployment creates a foundation for more agile, resilient, and customer-centric financial systems capable of adapting to rapidly changing market conditions.
Keywords: Financial Services, Microservices architecture, cloud-native banking, domain-driven design, real-time transaction processing