Modernise the system without stopping the business that runs on it
Incremental modernisation of legacy applications — strangler-fig migrations, data extraction, and framework upgrades delivered while the system keeps serving customers.
What modernisation covers
Rewrites are the last resort, not the starting point. Most of this work is careful, reversible, and delivered in slices.
Assessment and roadmap
A dependency, risk, and cost map of the current system, ending in a sequenced plan with the cheap wins first.
Strangler-fig migration
New capability built alongside the monolith behind a routing layer, with traffic moved feature by feature and rollback always available.
Data and schema migration
Dual writes, backfills, and verification jobs so the new store is provably consistent before anything is cut over.
Framework and runtime upgrades
End-of-life language runtimes, frameworks, and dependencies brought current, with test coverage added ahead of each move.
Containerisation and cloud fit
Applications packaged, externalised from the servers they grew on, and made deployable rather than hand-installed.
Test coverage as a safety net
Characterisation tests written against current behaviour first, so refactoring has something to prove it did no harm.
Change the engine while the car is moving
Four phases designed so every step is independently valuable and independently reversible.
Audit and risk mapping
Code, data, infrastructure, and the tribal knowledge in people's heads captured into a dependency map with risk ranked by blast radius.
Safety net first
Characterisation tests, observability, and a rollback path established before a single line of production behaviour changes.
Slice-by-slice migration
One bounded capability at a time moved behind a facade, verified in production with traffic shadowing, then switched over.
Decommission and handover
Old paths retired only once metrics prove they are unused, with runbooks and architecture notes left with your team.
What we modernise from and to
We work in the legacy stack as it is, and move it towards technology your team can actually hire for.
When modernisation stops being optional
The signals that the cost of waiting has passed the cost of acting.
Unsupported runtimes
A language version or framework past end of life, so security patches have quietly stopped arriving.
Release fear
Deployments happen at night, by hand, by one person, because nobody trusts what a change will break.
A cloud migration that stalled
The application was lifted to a virtual machine in the cloud and now costs more than it did on-premise.
Hiring has become the constraint
Nobody wants to work on the stack, and the people who understand it are close to leaving.
What changes after modernisation
The measures that matter are delivery speed, incident rate, and running cost.
Releases become routine
Automated pipelines and real test coverage move deployment from a monthly event to a normal working day.
Lower infrastructure spend
Right-sized, containerised workloads typically cut hosting cost substantially against long-lived over-provisioned servers.
Security posture restored
Supported runtimes and patchable dependencies remove a class of risk that no amount of perimeter tooling covers.
Features become affordable again
When change is safe, the roadmap stops being priced by fear and starts being priced by scope.
Why teams choose us for modernisation
Legacy work rewards patience and evidence more than ambition.
Learn more about us →No big-bang rewrites
Full rewrites fail at a rate the industry has documented for decades. We migrate incrementally and keep a way back at every step.
Evidence before opinion
We instrument the existing system and let usage data decide what gets migrated, kept, or deleted outright.
Respect for what exists
The legacy system runs the business. We treat its strange behaviours as requirements to understand, not mistakes to mock.
Your team comes along
We pair with your engineers throughout, because modernisation that only we understand is a new legacy problem.
Questions leaders ask before committing
Risk, sequencing, and how modernisation is funded without pausing the roadmap.
Should we rewrite instead?
Can we keep shipping features during this?
What if nobody understands the old code?
How long does this take?
Does this have to mean microservices?
Ready to make the old system safe to change?
Book a modernisation review and we will map the risks and a sequence that does not stop your roadmap.
Book a Modernisation Review →