Service · Migration and modernization
Migration and modernization of production systems
We migrate, rewrite and stabilize the systems your operation already depends on, without switching them off: from a server to the cloud, from an unsupported framework to a current one, from a slow database to one that holds up at peak times.
Nobody wants to touch the system everything depends on
The system works, more or less. It takes seconds to respond, goes down at peak times, runs on a server nobody knows how it was set up, and it's used by customers or partners who can't be left without service. Rewriting it is scary, and rightly so: most migrations that go wrong don't fail because of the new code, but on cutover day.
That's why a migration is planned as an operation: a layer that keeps existing consumers compatible, a comparator that checks record by record that the new system answers exactly like the old one, an incremental data copy rehearsed before cutover, and a step-by-step rollback procedure.
What we do
- 01
Technical audit
Code, database, infrastructure, integrations and security, reviewed with read-only access. Deliverable: risks, dependencies and the order in which to move.
- 02
Infrastructure migration
From your own servers or someone else's account to infrastructure owned by your company (AWS, Azure, Google Cloud or dedicated servers), defined as code and at the right cost.
- 03
Rewrites that don't break integrations
From unsupported frameworks (for example, old Ruby on Rails or unmaintained PHP) to a current TypeScript codebase, with a compatibility layer so connected systems and partners change nothing.
- 04
Verified data migration
Incremental copy from the legacy system, equivalence checks between the old and new systems, and a cutover rehearsal before the real day.
- 05
Performance and stability
Slow queries, indexes, caching, queues for heavy work and container-based deployments, measured before and after.
We work on what already runs, whether PHP, .NET, Java, Python, Node, Ruby, Go or Delphi, and we understand it before touching it.
How we work
1 · Read-only
Audit
We review code, data, infrastructure and integrations, and document risks, dependencies and the order in which to move. We sign an NDA first.
2 · Fixed proposal
Migration plan
Phases, measurable success criteria, a cutover window and a rollback plan, with price and dates.
3 · Without stopping the operation
Phased migration
Each phase is rehearsed, verified against the previous system and can be undone. The final cutover follows a written procedure; nothing is improvised.
Is it right for your company?
It's for you if…
- Your system is slow, goes down at peak times or runs on unsupported technology.
- Customers, partners or other systems depend on it and can't be left without service.
- Nobody on your team dares to touch the code or the infrastructure.
It may not be for you if…
- The system will be replaced by an off-the-shelf product within a few months: invest in that transition, not in a rescue.
- You want 24/7 support or a help desk: we don't offer that service.
Frequently asked questions
Do you need to switch the system off to migrate it?
No. The operation keeps running on the current system while the new one is built and verified. Cutover happens in a short, planned window, with a procedure to roll back if something fails. In our largest migration, cutover took under three hours and no data was lost.
Is it better to rewrite from scratch?
Almost never as a first step. Rewriting is expensive and slow, and meanwhile the current system keeps failing. First we stabilize what runs; if the numbers show that replacing a part costs less than maintaining it, we propose it in phases.
What happens to the systems connected to the current one?
They keep working. We build a compatibility layer that answers exactly like the previous system, so customers, partners and integrations don't have to change anything on cutover day.
Can you lower what I pay for servers or cloud?
Often, yes, as a consequence of fixing the cause: efficient queries and right-sized resources need less machine. We also review idle resources and price commitments on AWS, Azure or Google Cloud. We don't promise a figure without seeing your account.
Do you need write access to my systems?
Not for the audit: we work with read-only permissions. For the migration we agree with you on the permissions needed, phase by phase, and we sign an NDA before the first technical meeting.
Go deeper
Tell us which system worries you
In a 30-minute diagnosis we review the case and tell you how we'd migrate or stabilize it. No sales pitch.