Legacy code modernization
Modernize the system you can't afford to lose.
The Access database, the VB6 app, the classic ASP site, the custom system whose developer retired: rebuilt or carefully migrated, with your data and history intact and production never stopping.
Example · migration check · 9:40 pm
Old system and new, checked before cutover
| Example figures | Old system | New system | Match |
|---|---|---|---|
| Customers | 1,200 | 1,200 | Ties out |
| Vendors | 150 | 150 | Ties out |
| Open orders | 300 | 300 | Ties out |
| Invoices | 4,000 | 4,000 | Ties out |
| Invoice total | $250,000 | $250,000 | Ties out |
| Payments received | $180,000 | $180,000 | Ties out |
| Open balance | $70,000 | $70,000 | Ties out |
What we do.
The Access database, the VB6 app, the classic ASP site: rebuilt or carefully migrated, with your data and history intact.
Assessment first
We read the code and the data, document what the system actually does (often more than anyone remembers), and tell you whether to rebuild, migrate or bridge.
Migration with the data intact
Records moved, totals reconciled against the old system before cutover, and the old data kept readable.
Staged cutover
The new system runs alongside the old one, module by module, so the business never stops for a rewrite.
Documented handover
Source code, documentation and supported platforms, so the system outlives any one developer, including us.
What the audit covers.
- 1Systems auditTwenty minutes, free. What you run, what's breaking, what to fix first.
- 2Fixed-fee scopeA written Statement of Work with a fixed price. Half at signing, half on delivery.
Signs you need it.
- It only runs on one PC, and nobody is allowed to restart it.
- The developer who built it has retired, and nobody has the source code.
- It can't be backed up, moved, or connected to anything newer.
How we work.
No open-ended hourly billing, and no system you can’t take with you.
- 1Systems auditTwenty minutes, free. What you run, what's breaking, what to fix first.
- 2Fixed-fee scopeA written Statement of Work with a fixed price. Half at signing, half on delivery.
- 3Build alongsideThe new system or bridge runs next to what you have. Nothing stops.
- 4Reconciled cutoverTotals checked against the old system before anyone switches.
- 5Documented handoverSource code, documentation and accounts in your name. You own it.
- 6Optional maintenanceMonthly, cancellable on 30 days' notice. Never required.
Questions about legacy code modernization.
Do we have to replace the whole thing at once?
Almost never. We usually start with the riskiest or most painful piece, rebuild that alongside the old system, and move the rest in stages. Businesses often keep parts of the old system for years, connected through a bridge.
What if we don't have the source code?
It's common. We can often recover the data directly from the database or files, document the behavior from the running system, and rebuild from that. The free systems audit is where we find out what's possible.
Will our old data still be there?
Yes. Migration is reconciled, not just copied: we compare totals and record counts against the old system before anyone cuts over, and the old data stays readable afterwards.
Get your free 20-minute systems audit.
Tell us what you run and what’s breaking. We’ll map how your systems fit together, point out the quickest wins, and reply within one business day to set up the call.
- Three questions. About a minute.
- We reply by email. Leave a phone number only if you want a call.
Example · systems map · what the audit produces
- Website
- Job system
- Spreadsheets
- Inventory system
- QuickBooks, Xero or NetSuite
- Re-keyed by hand
- Connected