.NET Modernization

Migrate to Modern .NET

Modernize your legacy .NET Framework applications to .NET 8 or .NET 9. Gain performance improvements, security updates, cross-platform capability, and cloud-ready architecture without a complete rewrite.

Why Modernize?

.NET Framework is in maintenance mode. Modern .NET (formerly .NET Core) offers significant advantages:

• Performance - 2-5x faster than .NET Framework in many scenarios
• Security - Active development with regular security patches
• Cross-Platform - Run on Windows, Linux, or macOS
• Cloud-Ready - Optimized for containerization and cloud deployment
• Modern Features - Latest C# language features and framework capabilities
• Long-Term Support - Microsoft's investment in the future of .NET

Migration Strategy

We follow an incremental migration strategy rather than big-bang rewrites. The process starts with a thorough assessment of your existing application — identifying framework dependencies, third-party libraries, deprecated APIs, and custom configurations. We use the .NET Upgrade Assistant and manual analysis to map compatibility issues and estimate effort. Migration happens in manageable phases: we typically start with shared libraries and data access layers, then move to the web layer. Each phase is independently testable and deployable. We maintain parallel environments during migration so the existing application continues running while the modernized version is validated. Rollback procedures are documented for every phase — if something unexpected emerges, we can revert without data loss.

Legacy .NET Framework Expertise

We've worked with every major version of .NET Framework — from 1.1 applications still running in production to Framework 4.8 systems that need modernization. Our hands-on experience includes Web Forms applications with complex postback lifecycles and ViewState dependencies, WCF services with custom bindings and message contracts, ASP.NET MVC applications using older patterns like Unity DI containers, and Windows Services handling background processing. We understand the legacy patterns because we built with them for years — that makes identifying migration paths and potential pitfalls significantly faster than developers who only know modern .NET.

Modern Architecture Patterns

We modernize not just the framework version, but also the architecture:

• ASP.NET Core - Modern web application framework
• Minimal APIs - Lightweight API development
• Dependency Injection - Built-in DI container
• Configuration - Modern configuration patterns
• Logging - Structured logging with built-in providers
• Entity Framework Core - Modern ORM with better performance

What Gets Modernized?

A complete modernization touches every layer of the application. The project file format converts from verbose .csproj XML to the modern SDK-style format. Package references migrate from packages.config to PackageReference with updated NuGet packages. Deprecated APIs are replaced — System.Web references become ASP.NET Core middleware, ConfigurationManager becomes IConfiguration with appsettings.json, and Global.asax becomes Program.cs with the modern hosting model. Authentication moves from FormsAuthentication or OWIN to ASP.NET Core Identity or JWT-based schemes. Entity Framework upgrades to EF Core with updated DbContext patterns. We also modernize deployment — from IIS-dependent publishing to standalone executables that can run in Docker containers.

Migration Process

Our typical modernization process:

1. Assessment - Audit existing codebase, identify dependencies, map deprecated APIs, estimate migration complexity and effort for each component
2. Planning - Create phased migration roadmap with priorities based on business value, risk assessment, and dependency order
3. Incremental Migration - Migrate component by component — shared libraries first, then data access, business logic, and finally the web layer
4. Testing - Automated regression testing at each phase, performance benchmarking against the original application, UAT with stakeholders
5. Deployment - Parallel deployment with traffic shifting, monitoring for regressions, documented rollback procedures at every stage
6. Training - Knowledge transfer on modern .NET patterns, updated development workflows, and CI/CD pipeline documentation

Typical Projects

Common modernization scenarios we handle:

• Web Forms to Blazor/Razor Pages - Converting postback-based applications to modern component architectures
• WCF to ASP.NET Core APIs - Replacing SOAP-based services with RESTful or gRPC endpoints
• Windows Services to hosted services - Modernizing background processing for containerized deployment
• Entity Framework to EF Core - Upgrading data access layers with improved performance and cross-platform support