Services
Legacy .NET & ASP.NET Modernization
Modernize your legacy ASP.NET or .NET Framework application to modern .NET — incrementally, without a risky rewrite, and without downtime. We rebuild the inside while keeping the outside working exactly as it does today.
When it's time
Signs your .NET application is holding you back
It runs on .NET Framework or WebForms
Out‑of‑support runtimes, Web Forms, or ancient NuGet packages. It works — but every change is slow and risky, and hiring for it is getting hard.
Changes take too long and break things
Business logic tangled into pages and code‑behind, little test coverage, and a deploy everyone dreads. Small requests turn into big projects.
You can't safely move to the cloud
It's pinned to a specific Windows server, a fragile deploy, or on‑prem infrastructure — so modernizing hosting, scaling, or costs is off the table.
A rewrite feels too risky to start
You've been quoted a year‑long rewrite that pauses the roadmap and bets the business on a big‑bang cutover. That fear is well‑founded — and avoidable.
Our approach
Modernize the inside. Change nothing customers can see.
Most modernization horror stories start the same way: a year‑long rewrite that pauses the roadmap and ends in a single terrifying cutover. We don't work that way. We treat your existing system's behavior as the specification and rebuild it one endpoint at a time, so the application stays live and dependable the entire time.
Each slice moves a piece of the system onto modern .NET behind a clean, testable architecture — while preserving the exact URLs, request shapes, and responses that other apps and clients depend on. We keep the parts that already work (your database and hard‑won stored procedures usually among them) and replace the parts that actually hurt.
That discipline is the whole difference between shipping a modernization and shipping an outage. We wrote up exactly how we do it, in detail:
What we modernize
From legacy to modern — one safe step at a time
.NET Framework 4.x → modern .NET (8 / 10)
Supported, faster, cross‑platform, and cheaper to host.
ASP.NET WebForms → ASP.NET Core
A modern web stack — while keeping the exact URLs and responses your clients depend on.
Tangled code‑behind → Clean Architecture
Testable layers with the business logic isolated from the framework and the database.
On‑prem / pinned server → AWS (Linux)
Portable, scalable hosting with lower cost — moved only once the app is ready for it.
And what we deliberately don't change: the database and stored procedures that already work, and anything a client can observe — until it's provably safe to improve it.
Why Malaika
Senior engineers who've done this before
- Since 2007. Nearly two decades building and modernizing production .NET systems across eCommerce, healthcare, and enterprise.
- Incremental by default. No big‑bang rewrite, no roadmap freeze — value ships continuously and risk stays low.
- Zero‑downtime cutovers. We prove byte‑for‑byte compatibility before any traffic moves.
- AI‑accelerated, senior‑controlled. We use modern tooling to understand large legacy codebases quickly — with experienced engineers making every call, not hype.
FAQ
Common questions about .NET modernization
Do we have to rewrite the whole application?
No. We modernize incrementally — one endpoint or page at a time — while the existing system stays live and serving customers. You get value continuously instead of betting everything on a single big‑bang cutover.
Can you migrate ASP.NET WebForms and .NET Framework?
Yes. Migrating WebForms and .NET Framework 4.x applications to modern ASP.NET Core / .NET is core to what we do — including preserving the existing URLs, request shapes, and responses so dependent clients keep working untouched.
Will there be downtime?
No. We run the old and new implementations in parallel and prove byte‑for‑byte compatibility before any real traffic moves, so the cutover is a non‑event rather than a maintenance window.
Do we have to replace our database?
Usually not. Databases and stored procedures are often the most battle‑tested part of a legacy system. We typically keep them and modernize the application tier around them, so you don't run two enormous migrations at once.
How long does a modernization take?
It depends on the size and complexity of the system, but because we work incrementally you see improvements early and continuously — not only at the end. We scope a first slice that de‑risks the whole effort and delivers value quickly.
Let's Talk About Your Project
A quick 30‑minute call is all it takes to find out if we're a good fit for each other. Book a time and we'll take it from there.