Legacy Software Modernization

Rehosting moves a system to new infrastructure with minimal code change, refactoring cleans and restructures the existing code, and rebuilding redesigns it from the ground up. Rearchitecting sits between, reshaping the structure into modern services without a full rewrite. We choose per component based on risk, cost, and your goals, rather than applying one approach to everything.

In most cases, yes. We modernize incrementally and often run the old and new systems side by side, migrating piece by piece so the business keeps operating. A common pattern is to replace parts of the system gradually rather than switching everything at once. We plan rollbacks so a problem never takes operations down.

It depends on the system's condition and your goals. Modernizing what works is often lower-cost and lower-risk than a full rebuild, but a system that is fundamentally unfit may cost more to keep patching than to replace. We assess honestly and recommend the option with the best total cost and risk, even when that is less work for us.

Aging systems tend to accumulate security exposure, run on frameworks that no longer receive updates, and rely on specialists who are increasingly hard to find. Change becomes slow and fragile, which slows the whole business. Modernization reduces that risk while keeping the parts that still serve you.

We start with a thorough assessment, modernize in small increments, and test each change against real workflows before it goes live. We keep a rollback path at every step, so any issue can be reversed quickly. The priority is continuity: the business should keep running throughout.

No. We document the modernized system and hand over cleanly, so your team or another partner can maintain it. You own the code and infrastructure throughout. We are happy to continue supporting you, but that is your choice, not a dependency.