Migrating from ASP.NET Framework to ASP.NET Core: A Step-by-Step Guide
dotnet•May 20, 2026

Migrating from ASP.NET Framework to ASP.NET Core: A Step-by-Step Guide

In this article, you'll learn how to modernize legacy applications by migrating from ASP.NET Framework to ASP.NET Core. Start small, migrate APIs first, and gradually transition UI components to ensure a smooth and reliable modernization process.

freecodecamp

freecodecamp

Original source

Key summary

Migrating to ASP.NET Core is a strategic upgrade that improves performance, scalability, and cross-platform support. This guide covers architectural differences, migration strategies, step-by-step implementation, and best practices for building scalable, high-performance web applications.

TL;DR

  • Migrate legacy applications from ASP.NET Framework to ASP.NET Core
  • Use an incremental approach to minimize risks
  • Refactor for dependency injection and prioritize testing
  • Start small, migrate APIs first, and transition UI components gradually
  • Ensure cross-platform deployment, cloud-native scalability, and high-performance workloads
  • Follow best practices for building scalable web applications

This content is automatically summarized using AI. For full context, always refer to the original article.

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