Legacy .NET System Modernisation
The Challenge
A Malta-based enterprise relied on a business-critical application built on .NET Framework 4.5 running on Windows Server 2012. The application managed core operational workflows for over three hundred users but suffered from increasing performance degradation, inability to run on modern infrastructure, security vulnerabilities in outdated dependencies, and a shrinking pool of developers willing to work with the legacy stack.
Our Approach
redskios conducted a comprehensive code assessment and dependency analysis, identifying breaking changes, deprecated APIs, and architectural patterns that needed refactoring. We designed an incremental migration strategy using the strangler fig pattern, allowing the legacy and modernised components to run in parallel during transition and enabling the business to validate each module before proceeding.
The Solution
We delivered a phased migration from .NET Framework 4.5 to .NET 8, executed over twelve months in six two-month sprints. Each sprint modernised a specific module: data access layer (Entity Framework Core migration), authentication (Azure AD integration replacing Windows Auth), API layer (ASP.NET Core minimal APIs), background processing (hosted services replacing Windows services), reporting engine, and finally the UI layer. The application was redeployed to Azure App Service with a full CI/CD pipeline.
Related Services
.NET Development Services
Expert .NET development for enterprise applications using C#, ASP.NET Core, Blazor, and the full Microsoft technology stack. Production-grade code with enterprise security standards.
Enterprise Software Development
Custom enterprise software built for scale, security, and long-term maintainability. We deliver bespoke applications that integrate with your existing systems and evolve with your business across Malta.
Azure Cloud Architecture & DevOps
Design, migrate, and operate enterprise workloads on Microsoft Azure. From cloud-native architecture to DevOps automation, we deliver reliable, cost-effective cloud infrastructure in Malta.