Software Modernisation
Incremental modernisation of systems you cannot switch off, with no big-bang cutover.
The system everyone wants replaced is usually the one the business cannot stop using. That is precisely why it is still running on a framework that stopped receiving security updates years ago.
We modernise incrementally. New capability is built alongside the old system and traffic moves across a route at a time, so there is never a weekend where everything changes at once.
How we approach it
We put a seam around the legacy system first — usually a facade or strangler layer — so old and new can run in parallel and each migrated slice can be verified against real traffic before the old path is retired.
Why this matters
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No big-bang cutover
Value delivered continuously instead of a single high-risk switchover date.
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Reversible at every step
Each slice can be routed back to the legacy path if something is wrong.
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Security debt cleared
Unsupported runtimes and dependencies replaced with maintained ones.
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The team keeps shipping
Business change continues throughout instead of freezing for the duration.
What is included
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Assessment and sequencing
Dependency and risk analysis producing an order of work with costs.
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Strangler facade
A routing layer that lets old and new implementations serve traffic side by side.
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Parallel-run verification
Both paths executed against live traffic and outputs compared before switching.
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Characterisation tests
Existing behaviour captured as tests before anything is changed.
How we deliver it
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01
Assess
Interviews, documentation review and hands-on inspection to establish what is actually true about the existing system today.
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02
Analyse
Findings tested against your commercial constraints, so recommendations are affordable as well as correct.
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03
Recommend
A prioritised plan with sequencing, costs, dependencies and the risks of doing nothing.
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04
Implement
We deliver the work ourselves or support your team through it, whichever you prefer.
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05
Review
Measurement against the baseline we agreed at the start, and an honest account of what did not land.
What you receive
- Modernisation assessment with sequenced roadmap
- Characterisation test suite for existing behaviour
- Strangler facade and routing control
- Migrated services running in production
- Decommissioning plan for the retired components
Tell us about your idea, and we'll make it happen.
Have a problem that needs solving? We would like to hear about it.