Keywords
Azure Kubernetes Service
Domain-Driven Design
Abstract
Enterprise organizations increasingly face challenges in maintaining legacy .NET applications due to growing technical debt, limited scalability, outdated architectures, and rising maintenance costs. Modernizing these systems has become essential to improve business agility, operational efficiency, and long-term sustainability. This article explores practical approaches to modernizing enterprise .NET systems by leveraging contemporary technologies and architectural patterns, including ASP.NET Core, microservices, containerization, and DevOps practices. It discusses key modernization strategies such as incremental refactoring, migrating from monolithic to modular architectures, implementing automated testing and CI/CD pipelines, and adopting secure, scalable cloud platforms. The article also examines common challenges encountered during modernization, including minimizing business disruption, preserving data integrity, managing legacy dependencies, and reducing project risk. Through industry best practices and real-world insights, it demonstrates how organizations can successfully transform legacy .NET applications into resilient, high-performing, and maintainable enterprise solutions. The findings highlight that a well-planned modernization strategy not only enhances system reliability and performance but also accelerates innovation, improves developer productivity, and supports long-term digital transformation initiatives.