Legacy System Migration
Move off the system everyone is afraid to touch.
- PHP
- Laravel
- Node.js
- Python
- PostgreSQL
- AWS
The work
Most legacy systems are not bad software. They are software that outlived the assumptions it was built on, and the people who understood it. The risk is rarely the code itself — it is that nobody left can say with confidence what will break.
We start with an assessment rather than a rewrite: what the system actually does, which parts still earn their keep, where the business logic really lives, and what it costs you every month to leave it alone. Then we migrate incrementally, moving one capability at a time behind a facade so the old and new run side by side. Your team keeps shipping features throughout, and every step is individually reversible.
That is deliberately the opposite of a big-bang cutover. Rewrites that go dark for nine months and relaunch in one weekend are how migrations become the story of the year, in the wrong way. We would rather be boring about it.
What we
deliver.
The core capabilities inside our legacy system migration engagements.
Migration assessment
A clear-eyed audit of what the system does, what it costs to keep, and what is genuinely risky to move.
Incremental rewrites
Strangler-fig migration: new code takes over capability by capability, with the old path still there until it is not needed.
Data migration
Schema mapping, backfills and reconciliation, so the numbers after the move match the numbers before it.
PHP & monolith modernisation
Ageing PHP estates brought onto Laravel or a modern stack without discarding the business rules encoded in them.
On-premise to cloud
Lift, reshape and land on AWS with the operational pieces — backups, monitoring, deploys — in place from day one.
Knowledge recovery
Documenting the undocumented while we go, so the next team is not in the position you are in now.
Who it's for
Is this the
right fit?
We do our best work when the problem is a genuine fit. Legacy System Migration typically makes sense for:
Businesses running critical operations on software nobody on staff wrote
Companies whose feature roadmap is frozen because every change risks a regression
Teams on an unsupported framework or PHP version facing a compliance deadline
Organisations moving off on-premise servers without wanting to rewrite everything at once
FAQ
Common
questions.
- Do we have to stop shipping features during a migration?
- No, and you should not. We migrate one capability at a time behind a facade so the old and new systems run together. Your team keeps delivering to the roadmap while the ground moves underneath, which is the whole point of doing it incrementally.
- What if nobody here understands the old system any more?
- That is the usual situation, and it is what the assessment phase is for. We work from the running system and its data rather than from documentation that no longer exists — tracing real behaviour, then writing down what we find as we go.
- Is it cheaper to just rewrite from scratch?
- Almost never, and it is far riskier. A rewrite has to reproduce years of accumulated edge cases before it reaches parity, and those edge cases are usually the business. We rewrite from scratch only where a component is small and genuinely understood.
- How long does a legacy migration take?
- It depends on how much the system does, which is what the assessment establishes. The useful answer is that you see the first capability move within weeks rather than at the end — if a plan has no value delivered for six months, it is the wrong plan.
Ready
to start?
Tell us what you're trying to build. We'll tell you honestly whether we're the right team — and how we'd approach it.
Coimbatore, Tamil Nadu, India. We reply to every enquiry within one business day.