Legacy System Modernisation

Get your business off the software that's holding it hostage

If your business runs on a desktop application built before 2010, you have a problem that gets worse every year. The person who understands the system is retiring. The hardware it runs on is held together with habit. Every time load-shedding hits, there's a recovery process that costs hours. The question isn't whether to modernise — it's how to do it without stopping the business while it happens.

What we modernise

We've rebuilt systems from VB6, MS Access, FoxPro, and early .NET — moving them to modern web applications that run anywhere, survive load-shedding, and comply with POPIA.

VB6 and .NET desktop to web

Migrate old Windows desktop applications to modern web apps accessible from any browser, on any device. Same business logic, new foundation — no retraining required for your team.

MS Access database modernisation

Replace fragile Access databases with proper SQL Server backends and a modern web front-end. Multi-user, concurrent, properly backed up — no more corrupted .mdb files.

Sage and Pastel data migration

Extract, clean, and migrate years of financial and operational data from legacy accounting systems. Full reconciliation reports so your accountant can verify the numbers match.

POPIA compliance remediation

Identify and address personal data storage issues in legacy systems. Add access controls, audit logs, and data subject request handling before a regulator finds the problem first.

Phased migration — no big-bang cutover

We keep the old system running while the new one is built alongside it. Your business keeps operating throughout. We only switch over when you're confident — with a rollback plan if anything goes wrong.

Staff training and change management

Structured handover for your team — not a PDF manual. We train key users, document common tasks in plain language, and stay available during the first month of live operation.

How it works

Your business keeps running throughout. We build alongside the old system, not instead of it.

01
Audit

We document the current system completely — what it does, where the data lives, what the edge cases are, what the business rules are. Most legacy systems are undocumented; we fix that before touching anything.

02
Parallel build

The replacement is built and tested alongside the old system — your business keeps running throughout. We deliver in phases, so you're testing working modules within 6–8 weeks, not waiting for a year-long project.

03
Cutover

Structured switchover with a rollback plan. Data is reconciled before, during, and after migration. The old system stays available for 30 days post-cutover as a safety net while your team gets settled.

Built with

.NET React / Next.js SQL Server Azure Python PostgreSQL

We'd been trying to replace the old system for four years. Every time we tried, it was too risky to stop operations. Yuvati had a working web version running in parallel within three months — we switched over on a Friday afternoon with no drama.

Managing Director — Western Cape engineering firm

Let's find where you're losing money

The discovery call is free. We'll talk through your current system, how it's holding your business back, and what a realistic migration would look like. Yuvati will give you an honest assessment — including whether modernisation is actually the right move right now.

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