All case studies
Enterprise Software · ManufacturingLegacy Modernization18 months
Enterprise Legacy Desktop Modernization
An 18-month engagement to transform a 10-year-old WinForms ERP into a modern, cloud-ready platform without disrupting operations at 15 manufacturing sites.
Mid-sized manufacturing software vendor. 200+ concurrent users across 15 sites.
3 weeks → 30 min
Deployment cycle
0% → 87%
Automated test coverage
340%
Increase in dev team velocity
0
Production outages during 18-month migration
The Challenge
- ✕WinForms application with 900+ stored procedures, no documentation
- ✕Zero automated test coverage - every change risked regression
- ✕3-week deployment cycle with dedicated release engineer
- ✕Technology stack (.NET Framework 2.5, SQL Server 2008) blocking engineer hiring
- ✕Business leadership losing confidence in software as a competitive asset
What We Did
- Full technical archaeology: codebase inventory, stored procedure catalog, data model mapping
- Strangler fig migration: ASP.NET Core API layer added behind WinForms, traffic routed incrementally
- React frontend built module-by-module, replacing WinForms screens with parallel operation
- Automated test baseline written before any production code was touched
- PostgreSQL migration from SQL Server 2008, with stored procedures replaced by application code
- Azure DevOps CI/CD pipeline enabling daily deployments with automated rollback
Technology
Modern .NETASP.NET CoreReactTypeScriptPostgreSQLAzureAzure DevOpsDockerxUnit
"DilyaSoft did what three previous vendors said was impossible - they modernized our core system without a single production outage. Our team went from fearing deployments to shipping weekly."
- CTO, Enterprise ERP Platform
Facing a similar challenge?
Book a Technical Assessment