Case Study: a major global financial services institution achieves a production-ready .NET-to-Java rebuild with CAST

a major global financial services institution rebuilds .NET to Java in 1 day with CAST

The customer, a major global financial services institution, faced a challenge when rebuilding a critical .NET transaction platform in Java. While AI-generated code appeared functionally complete, CAST Imaging revealed critical security and structural gaps—including missing authentication, connection pooling, and thread-safety violations—that made production deployment impossible.

CAST provided the solution by using its CAST Imaging product as a grounding layer for AI. This provided the necessary architectural context to properly generate secure and resilient code. The vendor's solution enabled the team to deliver a fully production-ready Java application in just one day with zero rework, eliminating all ten critical gaps and improving test coverage by 2.7 times.