Legacy Software & Application Modernization
Moving off a system that still works but has become expensive to keep - done in stages, with the business running throughout, rather than as a rewrite that takes two years and arrives late.
What usually brings people here
One person understands it
The system was written years ago by someone who has left. Changes are avoided because nobody is confident what else will break. That is a business risk, not a technical preference.
It cannot connect to anything
No API, no export beyond CSV, no way to feed the reporting or the new tools you have bought. The system has become an island.
It only runs on old infrastructure
An unsupported operating system, a database version past end of life, or a machine under a desk that nobody dares restart. Security and compliance eventually force the issue.
What we build
Assessment and options
An honest read on what the system does, what it costs to keep, and whether modernizing, replacing or leaving it alone is the right call.
Incremental replacement
Peeling functions off one at a time behind a facade, so the old and new run side by side and each step is reversible.
Data migration
Moving operating history across with reconciliation you can verify, not a one-way import you have to trust.
API layers over legacy systems
Giving a closed system a modern interface so new tools can integrate without the core being rewritten.
Re-platforming
Moving off unsupported operating systems, databases and hardware onto supported cloud infrastructure.
Our approach
Understand before touching
We map what the system does, including the behaviour that is not documented anywhere but which the business depends on.
Strangle, do not rewrite
New functionality is built alongside and traffic moved across gradually. Big-bang rewrites are the most reliable way to fail expensively.
Keep it reversible
Every stage can be rolled back. Nothing is switched off until its replacement has run in production.
Migrate data with reconciliation
Counts, totals and spot checks that prove the new system holds what the old one held.
What we build with
Chosen for fit and for how easily another team could pick the work up, not for novelty.
What changes afterwards
Change becomes possible again
Work that was avoided because of risk becomes routine.
The island connects
An API layer lets the rest of your toolset reach data that was previously trapped.
Supported infrastructure
Off end-of-life platforms, with security patching that actually happens.
Where this work lands
Frequently asked
It depends on whether the system's logic is still correct. If the business rules inside it are sound and only the technology has aged, modernizing preserves years of accumulated knowledge. If the process itself has changed beyond recognition, replacement is more honest. The assessment answers this before you commit.
Yes - that is the point of doing it incrementally. Old and new run side by side, functions move across one at a time, and each step is reversible. There is no weekend where everything changes at once.
It moves with reconciliation you can check: record counts, financial totals and spot comparisons against the old system. Where you have retention obligations we keep the old system readable until those are met.
It is normal. We work from the code, the database and the people who use it daily. Undocumented behaviour that the business depends on is exactly what a careful assessment is for.
Longer than a new build of the same size, because there is a working business to protect. The first stage usually lands within a few months; the full transition is measured in stages rather than a single date.
Services that pair with this
Custom Software Development Services
Software built around how your business actually works, rather than a product you have to reshape yourself to fit.
Read moreCloud Development & Integration Services
Applications built for cloud infrastructure, and existing systems moved onto it - with data residency, predictable cost and deployment you can repeat.
Read moreAPI & System Integration Services
Making the systems you already own talk to each other, so a piece of data is entered once and appears everywhere it is needed.
Read moreDiscuss your software modernization project
Describe the challenge in your own words. You will get a candid assessment of whether software is the right solution, what the work would involve, and a realistic cost range.