Have a Rebuild Project?
Many software publishers reach a point where their historical product — often built ten or fifteen years ago on a monolithic architecture — becomes a liability rather than an asset. This is almost never a matter of business expertise: the publisher knows their sector, their customers and their use cases better than anyone. The real obstacle lies elsewhere: the technical debt accumulated over the years makes every evolution slower, riskier and more expensive.
The real problem isn’t the business, it’s the technical debt
At Hydatis, we have supported several software publishers through this type of custom software rebuild — migrating a legacy stack to a modern cloud architecture, often transforming the product into a true multi-tenant SaaS. In most cases, the publisher masters their business perfectly — and their internal teams are rightly focused on the core business and on building new features for their customers. What’s missing isn’t skill, it’s availability: mobilizing, in parallel, all the technical expertise a rebuild of this scale requires, without diverting the product team from its primary mission or interrupting the existing production.
A multidisciplinary team, not just developers
A rebuild of this scale isn’t just about “rewriting the code.” It mobilizes several profile types in parallel: DevSecOps for infrastructure and continuous integration, front-end and back-end developers for functional reconstruction, QA to guarantee no regressions, UI/UX to modernize the user experience, and cybersecurity expertise including penetration testing to validate the robustness of the new architecture before it goes live.
An agile, progressive approach — never a big-bang
Rewriting software in production carries an obvious risk: interrupting service for the publisher’s existing customers during the transition. That’s why our approach is always agile and progressive — module by module, with iterative deliveries, rather than a complete rebuild delivered in one block. This method validates each building block under real conditions, limits risk, and maintains service continuity throughout the project.
Illustrative example, not a named client. This type of engagement, for instance, involved a publisher whose product relied on a monolithic PHP architecture over ten years old; the rebuild enabled a progressive migration to a modular cloud architecture, with no service interruption for end users.
If your software product has reached a similar point — functionally solid but technically running out of steam — let’s talk.