Legacy .NET Framework applications don't have to be rewritten from scratch. In fact, the most successful modernization projects are incremental — migrating one layer at a time while keeping the business running.
The Strangler Fig Pattern
The safest approach to modernization borrows from nature. A strangler fig grows around an existing tree, gradually replacing it. Similarly, you can build new .NET 10 services alongside your legacy app, routing traffic to the new implementation piece by piece.
Start With the Data Layer
Entity Framework Core is often the easiest migration path. Move your data access from EF6 or raw ADO.NET to EF Core, and you immediately unlock better performance, cross-platform support, and modern LINQ patterns.
Don't Forget the Frontend
Blazor gives .NET teams a way to build interactive web UIs without learning a JavaScript framework from scratch. Whether you choose Server or WebAssembly mode, your existing C# skills transfer directly.
Key Takeaways
- Incremental migration beats big-bang rewrites
- Start with the data layer for quick wins
- Blazor lets .NET developers own the full stack
- Measure before and after — prove the value of each step