Migration from Legacy .NET Framework to Modern .NET Framework of an Enterprise System

Abstract

Enterprise applications developed using the legacy .NET Framework have played a significant role in organizational systems for many years. These systems support critical business operations such as employee management, reporting, data processing, and administrative workflows. However, with the evolution of software development practices and increasing demand for high performance, scalability, and cross-platform compatibility, the limitations of the traditional .NET Framework have become more evident. This has led organizations to migrate towards modern .NET frameworks such as .NET Core and later unified versions like .NET 5/6/7.

This study examines the migration process from the legacy .NET Framework to modern .NET within an enterprise system environment. The research is based on practical development experience involving real-world applications built using technologies such as ASP.NET, SQL databases, REST APIs, and front-end frameworks. During the migration process, several technical and architectural challenges were observed, including compatibility issues, dependency management, configuration changes, and performance optimization.

The study analyzes the limitations of the legacy framework, the motivations for migration, and the improvements achieved after adopting modern .NET. The findings indicate that modern .NET provides enhanced performance, cross-platform support, better scalability, and improved developer productivity. This research aims to provide practical insights into the migration process and highlight best practices for upgrading enterprise applications to modern development environments.

Keywords: NET Framework, .NET Core, Enterprise Application, Migration, Performance Optimization, Cross-Platform Development, Web Application Development, API Integration, Software Modernization, System Architecture.