...Legacy modernization is often slowed by stopgap patches, cloud emulation, technical debt, integration risk, and high-stakes cutover moments, but Imogen changes the risk equation with a behavior-first, test-driven approach. Instead of focusing only on code, Imogen captures how individual workloads actually behave through real data flows and creates a precisely equivalent behavioral replica of a complex system through a clear, iterative, and transparent process. It builds a precise behavioral specification from the running system, then applies a closed loop of rapid code generation and verification against those specifications, creating software that is audit-quality, idiomatic, and ready for what comes next.