Ingeniería senior • Entregas semanales • Propiedad total del código

ConaiSoft · Service

Legacy software rebuild

Full rewrites fail more often than vendors admit. We modernize high-risk surfaces first — APIs, critical modules, data — and leave alone whatever is still quietly making money.

When a rebuild (or modular replace) makes sense

Not because screens look old — because business risk is measurable.

  • Unacceptable security or compliance exposure
  • Dangerous bus factor: one or two people understand the system
  • Features that should take days take months
  • Dead stack: you cannot hire engineers at any price

How we avoid the big-bang rewrite

Strangler by module, clear API contracts, and production value in weeks — not a 12-month big reveal.

  • Risk map: security, change velocity, people dependency
  • Isolate migration-candidate modules
  • Ship increments with tests and APIs; retire the old path in stages

What you get

An actionable assessment, a prioritized modernization plan, and a team that can execute the first slice without lock-in.

FAQ

Do we always need to rewrite legacy software?

No. Many older systems only need high-risk modules modernized. A full rewrite is often the most expensive and dangerous option.

How long does an assessment take?

A focused discovery is usually enough to choose rebuild vs modular modernization and estimate the first slice.

Can you add new APIs on top of the current system?

Yes. Often the first step is an API/antiseptic layer around the legacy core while pieces migrate.

Under pressure to “modernize” legacy?

We help you choose rebuild vs strangler with business criteria — not technology fashion.

Book an assessment

When to rebuild legacy software

¿Tienes dudas? Deja tu correo y te escribiremos

Recibe información personalizada sobre tu proyecto