A SaaS company with a 6-year-old Laravel monolith needed to modernize without halting feature development or risking a big-bang rewrite.
The Problem
The application had grown organically over 6 years. Key areas were undocumented, test coverage was below 20%, and onboarding new engineers took months. The team wanted to add AI capabilities but couldn’t safely integrate with the existing architecture.
The Approach
We took an incremental modernization path:
- Assessed the codebase and identified safe integration points for new capabilities
- Added API layers and service boundaries to decouple new features from the monolith
- Introduced comprehensive logging and observability (structured logs, metrics, tracing)
- Built automated documentation generation from code and database schema
- Used feature flags for all new AI integrations to enable safe, gradual rollout
The Outcome
- Test coverage increased from ~18% to over 60% in critical paths
- New engineer onboarding time reduced from months to weeks
- AI capabilities integrated safely with zero production incidents
- The team gained confidence to continue modernization independently