Do we have to rewrite everything at once?

No. We prefer incremental modernisation using the strangler-fig pattern, replacing components one at a time while the system stays live, which lowers risk and spreads cost.

What if the old system has no documentation?

That is common. We reverse-engineer the behaviour, document it as we go, and add tests so the new system can be validated against the old one's real output.

How do you avoid losing data in the move?

We migrate in stages with validation and reconciliation at each step, run the old and new systems in parallel where needed, and keep a tested rollback so a bad migration can be reversed.

Modernisation

Software & Web Development

Legacy modernisation

Move off ageing systems safely, without a risky rewrite or a painful big-bang launch.

We modernise legacy systems by understanding what they do, what is brittle and what is business-critical, then migrating incrementally instead of betting everything on a rewrite. The strangler-fig pattern lets us replace old components piece by piece while the system keeps running. We migrate data carefully, re-platform to modern frameworks and cloud, and document the result so it is no longer a black box only one person understands.

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What you get

Included in this service

System assessment

A clear map of what the legacy system does, its risks and the right path to modernise it.

Incremental migration

Strangler-fig replacement that swaps out old parts gradually with no big-bang cutover.

Data migration

Careful, validated migration of your data with reconciliation so nothing is lost or corrupted.

Re-platforming

Move to maintained frameworks and cloud infrastructure that are secure and supportable.

What you walk away with

Legacy assessment and migration plan
Modernised application
Validated data migration
Architecture and runbook documentation
Accessibility and performance pass
Post-delivery support window

How we engage

A clear path from problem to outcome

Discovery and scope

We map the problem, users and constraints, agree the requirements, and define a clear scope with milestones, a technical approach and success criteria you can hold us to.

Architecture and design

We choose the right stack, data model and API contracts, design the user experience, and plan for security, performance and scale before a line of production code is written.

Build and iterate

We ship in short increments with automated tests and code review, demo working software each sprint, and adjust to your feedback so you see progress, not a black box.

Release and support

We deploy through a CI/CD pipeline, hand over clear documentation, set up monitoring and alerting, and provide ongoing maintenance so the system stays secure and reliable.

Frequently asked questions

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