.NET Framework to .NET Core Migration
Modernise your legacy .NET applications safely and efficiently
We migrate legacy .NET Framework applications to modern .NET — unlocking cross-platform deployment, dramatically improved performance, lower hosting costs, and access to the latest C# features. With 10+ years of .NET experience, we handle migrations of all sizes with minimal disruption to your running business.
Our Process
Migration Assessment
We audit your existing codebase — cataloguing third-party dependencies, .NET Framework-specific APIs, WCF services, and incompatible packages — and produce a detailed migration plan with effort estimates and risk ratings.
Dependency & Compatibility Analysis
We identify every NuGet package, COM component, and Windows-specific API call that needs a .NET-compatible replacement, and source or build suitable alternatives before migration begins.
Incremental Migration
Where possible, we migrate incrementally — moving project by project using the .NET Upgrade Assistant and manual refactoring — so your existing application keeps running throughout the process.
Testing & Regression Validation
Comprehensive regression testing against your existing functionality — ensuring every feature, integration, and edge case behaves identically on the new runtime before go-live.
Performance Optimisation
Post-migration, we leverage .NET 8 performance improvements — Span-based APIs, improved GC, minimal APIs, and async patterns — so you gain measurable speed benefits, not just platform parity.
Deployment & Cutover
We plan and execute the production cutover with a rollback strategy in place — managing DNS changes, IIS-to-Kestrel migration, Azure App Service configuration, and post-launch monitoring.
Why Choose Us for .NET Framework to .NET Core Migration
Deep .NET Legacy Experience
We have migrated WebForms, MVC 5, WCF, and Windows Services applications to modern .NET — we know where the hard problems are and how to solve them without rewriting everything.
Performance Gains Out of the Box
.NET 8 is up to 3–5x faster than .NET Framework for typical web workloads. Your migrated application will handle more traffic with less infrastructure.
Lower Hosting Costs
Modern .NET runs on Linux — meaning cheaper cloud instances, containers, and serverless deployments compared to Windows Server hosting required by .NET Framework.
Minimal Business Disruption
Our incremental approach keeps your existing application live throughout the migration. We plan cutovers during low-traffic windows with tested rollback procedures.
Security & Long-Term Support
.NET Framework is in maintenance mode — no new features and shrinking security support. Migration to .NET 8 LTS puts you on a supported, actively developed platform.
Unlock Modern .NET Features
Minimal APIs, record types, nullable reference types, improved async patterns, and the full .NET 8 ecosystem — your team gains access to years of language and framework improvements.
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