The Challenge
A mid-size insurance company had a policy management system built in Delphi 7: 200,000+ LOC, 450 forms, 300 stored procedures. The last Delphi developer was 6 months from retirement.
Phase 1: Assessment with Lens
Lens scanned the codebase in 47 seconds: 450 forms mapped, 1,247 business rules extracted, 32 circular dependencies identified.
Phase 2: Automated Migration
- Analysis (A00-A10): Full AST parsing, knowledge graph, business rule validation
- Design (D01-D10): Clean Architecture with 12 bounded contexts
- Backend Generation (G01-G20): 180 controllers, 240 services, 120 repositories
- UI Transform (U01-U10): 150 Angular components, 45 services, full routing
- Quality (Q00-Q13): 4,200 unit tests, 890 integration tests, all 6 gates passed
- Deployment (DP01-DP08): Docker images, Kubernetes manifests, CI/CD pipeline
Results
- Timeline: 3.5 months (vs. 14 months manual)
- Cost: $320,000 (vs. $1.2M manual)
- Logic preserved: 99.2% functional equivalence
- Performance: 40% faster on cloud infrastructure