Existing SaaS evolution & modernization
Evolve a production SaaS without endangering it: progressive migration, never a big bang.
Context
To SaaS publishers whose product has been in production for several years and who hit roadblocks: technical debt slowing every evolution, performance degrading with growth, obsolete technologies, accessibility non-compliant with current standards, security to harden. To technical leaders who know the product must evolve but fear the impact of a rewrite on business continuity.
Our approach
Every modernization starts with an audit. We identify system layers, their interdependencies, risk levels and expected gains. Then we propose a layer-by-layer roadmap: each layer is modernized independently, with a rollback plan in case of incident. This progressive approach has two virtues: it limits risk at every stage, and it allows prioritizing initiatives that bring the most business value first. The big bang rewrite, we refuse: it's statistically the best way to kill a production product.
What you get
- An audit report identifying priority initiatives with their estimated ROI
- A layer-by-layer modernization roadmap, with milestones and budgets
- Progressive execution with production release at every validated milestone
- A non-regression test suite that protects the existing system during migration
- Up-to-date technical documentation reflecting the new system state
Method and steps
Our standard process is adapted for modernization engagements: the Discovery phase becomes a deep technical audit, the Design phase defines the layer-by-layer migration strategy, and each layer follows its own full cycle (design, dev, test, delivery) before the next starts. This structure allows pausing or redirecting the program at any moment, without losing everything.