Paper Title
Operational Overheads in Microservices Architecture VS Service-Oriented Architecture: A Management Perspective

Abstract
The main reasons that led to the rise of Microservices Architecture (MSA) in place of Service-Oriented Architecture (SOA) are its modular and scalable structure, and the capacity to accommodate agile development. While the technical strengths of microservices are well acknowledged, the related running and managerial costs are also often underestimated. This paper conducts a comparative analysis of the specifics of microservice-based operational complexity as compared to the ones of the traditional SOA systems. The most critical operational areas are included in infrastructure, monitoring, CI/CD, security, team skills, scalability, release velocity and middleware licensing. An elaborate comparison indicates where the operational costs increase or decrease as a result of migration and determines the intensity of operational overheads across both categories. The research shows that microservices allow quick development and fine-grained scalability but necessitate increased investment in tooling, governance, and cross-functional work. The objective behind these findings is to provide an accurate view of the trade-off between flexibility and operational complexity to embrace microservices, which will inform decision-makers about the need to have strategic planning to make the implementation sustainable. Keywords - SOA to Microservices Migration, Microservices Architecture (MSA), Service-Oriented Architecture (SOA), Operational Overhead, Monitoring and Observability, Cost Analysis.