Legacy application modernization without a big-bang rewrite

Cost depends on code size and quality, the number of integrations, data volume and cleanliness, and the approach chosen for each component. Rehosting is the least expensive option, refactoring sits in the middle and rebuilding costs the most. Because every system is different, we start with an assessment and then provide a phased plan with a fixed quote per phase, following a free consultation.

Rarely all at once. Full rewrites tend to run longer than planned, miss undocumented rules and leave the business waiting for one risky cutover. A phased approach replaces the most painful parts first, keeps everything else running and delivers value along the way. A complete rebuild makes sense only when the existing code cannot be tested or safely changed.

A focused upgrade, such as moving one application to a supported framework version, typically takes 6–12 weeks. Larger programs run in phases over several months, with each phase delivering working software. The initial assessment gives you a realistic timeline before you commit to anything beyond it.

We plan migrations to keep disruption minimal through parallel running, data synchronization between old and new systems, rehearsed cutovers and rollback plans. If a brief outage cannot be avoided, we agree on the timing with you, usually outside working hours, and tell users ahead of time. People usually move over module by module rather than all at once.

Yes, and it is a common starting point. We read the code, trace how data moves, interview long-time users and add characterization tests that record current behavior before anything changes. The result is documentation of how the system actually works, which is valuable even before modernization begins.