Codoop modernizes legacy systems without big-bang rewrites, wrapping, strangling, and replacing modules while production keeps running.
Legacy systems hold years of business logic and risk. A full rewrite is rarely the first move. We map dependencies, wrap stable cores with APIs, and replace UI and workflows module by module.
New surfaces ship in React and TypeScript with accessible layouts and faster load times. Behind the scenes, databases are re-indexed, jobs are made observable, and regression suites protect critical paths.
Cutover plans include dual-write or sync windows where needed, so customers never see a dark weekend. Training and runbooks help internal teams adopt the new tools confidently.
The end state is a maintainable stack your engineers can hire for, not a museum of undocumented scripts.
Frequently Asked Questions
What if we lack documentation for the old system?
Common. We reverse-engineer behavior from code, database traces, and operator interviews, then lock critical paths behind tests before changing them. Codoop delivers this as production software you own, in 14-day sprints, with staging demos and a full source handover. Work starts from a written architecture note and finishes with repositories, runbooks, and full client ownership of the code.
Can we keep the old database for a while?
Yes. Many programs keep the system of record initially and migrate schemas gradually once new services prove stable. Codoop delivers this as production software you own, in 14-day sprints, with staging demos and a full source handover. Work starts from a written architecture note and finishes with repositories, runbooks, and full client ownership of the code.
How do you limit risk?
Feature flags, parallel runs, canary cohorts, and rollback plans. We modernize in slices that finance and ops can approve. Codoop delivers this as production software you own, in 14-day sprints, with staging demos and a full source handover. Work starts from a written architecture note and finishes with repositories, runbooks, and full client ownership of the code.