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Legacy modernization
Legacy modernization without stopping your business
We move old internal systems to a modern stack step by step: first an audit of the code and the risks, then a plan, then a rebuild in stages while the old system keeps running. Your team keeps working the whole time.
- Step by step
- the old system runs until each part is replaced
- Your data
- moved, checked and kept safe
- You own it
- code, cloud accounts and documentation
When does software need modernizing?
When it holds the business back: changes take months, only one person understands it, or it can no longer be kept secure.
It was built 10+ years ago
On a framework or language that few developers still work with.
Only one person knows it
Every change waits for them, and nobody could replace them.
It can't be kept secure
Its software versions no longer get security updates.
It doesn't connect to anything
Data is copied by hand between it and your other tools.
Spreadsheets fill the gaps
Teams work around missing features in Excel and on paper.
It is slow and fragile
Every update risks breaking something else.
What is included in a modernization project?
A plan you can trust before anything is rebuilt, then the rebuild itself, in stages.
- 01
Code and architecture audit
A review of the code, the data and the risks, with a clear verdict: refactor, rebuild or replace.
- 02
Migration plan
The order in which parts are replaced, so the riskiest and most valuable ones come first.
- 03
Modern architecture
A stack chosen for your team and budget, for example .NET, Node.js or Python on AWS or Azure.
- 04
Rebuild in stages
Module by module, while the old system keeps running beside the new one.
- 05
Data migration
Your data moved, cleaned and checked against the old system before anything is switched off.
- 06
Integrations
Connections to the tools you use today: ERP, accounting, CRM or your website.
- 07
Testing
Every stage tested by our QA team before your people use it.
- 08
Documentation and handover
Code, cloud accounts and documentation in your name, so you are never locked in.
How does a modernization project work?
In stages, each one small enough to test and switch over safely.
- 1
Audit
We review the code, the data and the infrastructure, and talk to the people who use the system.
You: share access
- 2
Plan
A written plan: what to keep, what to rebuild, in which order, and the cost of each stage.
You: approve the plan
- 3
First stage
The first module rebuilt and running beside the old system.
You: test it with your team
- 4
Next stages
Module after module, with data moved and checked at each step.
You: approve each switch-over
- 5
Switch-off and support
The old system is retired; we support the new one monthly or by the hour.
You: choose a support plan
How much does legacy modernization cost?
It starts with a fixed-price audit and plan, so you know the scope before committing to the rebuild. Each stage of the rebuild is then priced on its own, as a fixed price or by the hour.
What the price depends on
- The size of the system and how much of it is still used
- The state of the code, and whether documentation exists
- How much data has to move, and how clean it is
- The number of integrations with other systems
- How long the old and new systems must run side by side
Refactor, rebuild or replace?
The audit tells you which one fits. Often it is a mix, part by part.
Refactor
Keep the system, update its code and libraries, and fix what slows it down.
Rebuild in stages
Replace the system module by module on a modern stack, without a big-bang switch-over.
Replace
Move to an off-the-shelf product where one fits, and connect it to the rest of your tools.
Systems we built to replace paper and old tools
All case studiesModernization questions
Yes. Most modernization projects start with code someone else wrote. The audit shows how it is built and what it would take to change it.
No. The old system keeps running while each part is rebuilt, and we switch over one part at a time, when your team is ready.
Rarely. The audit often shows that some parts are fine, some need updating and only a few need rebuilding.
It is moved in stages, checked against the old system and kept safe. Nothing is switched off until the data in the new system is confirmed.
Usually .NET, Node.js or Python with React, on AWS or Azure, chosen to fit your team and the system you have today.
You do. The code, the cloud accounts and the documentation are in your name.
