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Cloud, Data & Engineering · Services

Legacy Modernization

We modernized a maternal and infant care tracking system from a Windows Forms desktop app to a cloud-based web platform, without losing years of patient history in the process. That's legacy modernization done right. We bring VB6, WinForms, and Web Forms systems forward to modern, maintainable infrastructure, assessing what's actually worth keeping before anything gets replaced. Data integrity checks run through the whole migration, and rollout happens in phases with a way back if something's wrong. The workflows your staff already know stay intact: what changes is the architecture underneath, not the job they have to relearn.

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Overview

Assess before you rebuild

Legacy modernization has a bad reputation because it's usually done as a full rewrite: throw out the old system, rebuild from scratch, and hope nothing important got lost along the way. We do it differently: assess what's actually worth keeping before anything gets replaced.

We took a neonatal and maternal health tracking system, covering vitals, medicine records, charts, and full patient history across dozens of modules, from a legacy Windows Forms desktop app to a modern cloud-based platform, preserving the data and the workflows staff already knew, while fixing what the old architecture couldn't do.

What's Included

What you get with Legacy Modernization

System assessment first

What's worth keeping, what needs to change: an honest answer, not a rewrite by default.

Data migration with integrity checks

Years of records moved without silent data loss.

Cloud re-platforming

VB6, WinForms, and Web Forms brought forward to modern, maintainable infrastructure.

Workflow preservation

Staff don't have to relearn how to do their jobs because the interface changed for no reason.

Phased, reversible migration

Rolled out in stages, with a way back if something's wrong.

Post-migration support

We stay on through the adjustment period, not just the cutover date.

How We Work

Our approach

Assessment always comes before migration planning. We won't recommend a rewrite when a smaller intervention actually solves the problem. That assessment maps what the current system actually does, including the undocumented business logic that usually only lives in the old code itself. Migration is planned and executed in phases against a copy of real data, with integrity checks at each stage, not a single high-risk cutover weekend. We validate the new system against the old one side by side before the old one gets switched off, so nothing quietly stops working.

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Tech We Use

Tools & technologies

Legacy Stack

VB6 WinForms Web Forms

Modern Stack

.NET Core React

Cloud

Azure AWS
FAQ

Common questions about legacy modernization

Do we have to replace the whole system, or can you modernize parts of it?

Often parts. We assess what's actually causing problems versus what's just old but working fine.

Will we lose historical data during migration?

No, data integrity checks are part of the standard process, not an afterthought.

How long does a modernization project take?

Depends heavily on system complexity. We'll give a firm estimate after the assessment phase, not before.

Can you modernize a system built by a different developer?

Yes, we regularly take over legacy systems we didn't originally build.

What happens to undocumented business logic buried in the old system?

We extract and document it as part of the assessment: it's usually the most important thing to get right, since it's rarely written down anywhere else.

Do you provide training for staff on the modernized system?

Yes, we walk your team through the new system and preserve familiar workflows wherever possible, so the transition isn't disruptive.

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Let's talk

Ready to start your legacy modernization project?

Whether you need a brand-new build, a redesign of something that's already live, or a second opinion on a project another vendor left behind, our in-house engineering team scopes the work honestly, keeps you updated sprint by sprint, and stays reachable after launch instead of disappearing once the invoice is paid. Fill in the quick form and we'll reply within one business day, or book a free 30-minute architecture review if you'd rather talk it through first. No obligation, no sales pitch.

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