.NET / C#
Legacy Modernization
Rehosting and re-architecting aging systems onto modern .NET and the cloud.
A legacy system is usually not bad software. It is software that outlived its assumptions, and it holds years of business rules that exist nowhere else, including in anyone memory. That is exactly why a big-bang rewrite is the most dangerous option available.
We use the strangler pattern: stand the new system alongside the old, move functionality piece by piece, and keep the business running throughout. Each phase ships something real, which keeps risk low and keeps the project funded.
What you get
- Assessment of the current system, its dependencies and risks
- A phased modernisation plan with a cost per phase
- Characterisation tests capturing existing behaviour first
- Incremental migration to modern .NET and Azure
- Decommissioning plan for the old system
Questions
Can you modernise without a rewrite?
Often, yes. Rehosting to Azure, upgrading the framework and replacing only the painful components addresses most of the cost and risk. A full rewrite is the most expensive option and rarely the right first move.
Nobody understands the old code. Is that a blocker?
No, it is normal, and AI-assisted analysis has made reading unfamiliar codebases dramatically cheaper. That is precisely why projects that were uneconomic a few years ago are worth doing now.
More in Custom Software Development