Legacy Modernization
We migrate legacy systems to modern stack without disrupting operations. We use the strangler fig pattern: instead of rewriting everything at once, we gradually extract features into modern services while the old system keeps running. APIs as an intermediary layer, containers for portability, and regression tests to ensure nothing breaks.
Gartner estima que entre el 60% y 70% de las empresas medianas tienen al menos un sistema legacy crítico de más de 10 años en operación
El mantenimiento de sistemas legacy consume típicamente entre el 60% y 80% del presupuesto IT total, dejando poco margen para innovación
La modernización de legacy es uno de los proyectos IT con mayor ROI cuando está bien planificada: reduce costos operativos, acelera nuevas features y reduce riesgo de seguridad.
Deliverables
Process
Audit
We evaluate the current system, identify technical debt and dependencies.
Plan
We define the migration sequence and intermediary APIs.
Extraction
We migrate modules one by one using the strangler fig pattern.
Cutover
Regression tests, data migration, and legacy decommissioning.
Legacy Modernization — by city
FAQ
What is the strangler fig pattern?
It's a migration strategy where the new system grows around the old one, gradually replacing features. This avoids the risk of a total rewrite and keeps operations running while you migrate.
Can you migrate systems built in PHP, .NET, or Java?
Yes. The source system's language doesn't matter — what we do is expose its features as APIs and gradually replace them with modern services in Node.js / Next.js.
How do you guarantee no data is lost during migration?
We use data migration with cross-validation: data is copied to the new system and records are compared. The cutover is done in a coordinated window with a backup and rollback plan.
Can you do a partial migration and keep part of the old system?
Yes, that's the most common approach. We migrate the modules with the most technical debt or business value first, and leave the rest running until it makes sense to migrate them.
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