Case Study: a leading financial institution achieves faster VB6-to-C# modernization with Legacyleap

Accelerating VB6 to C# Modernization for a Financial Institution with GenAI via Legacyleap

The client, a leading financial institution based in Salt Lake City, faced the urgent challenge of securely modernizing its legacy VB6 system to C#. The aging system had security vulnerabilities and scalability limitations, and the migration needed to be completed under strict financial regulatory standards with zero tolerance for any loss of complex business logic. Legacyleap was engaged to address this high-risk modernization.

Legacyleap implemented a solution using an AWS-native approach powered by Amazon Bedrock for AI code comprehension, Amazon Neptune for relationship mapping, AWS Glue for data migration, and Amazon CodeGuru for code quality. This resulted in a code conversion process that was 70–80% faster than manual methods. The final, compliance-validated C# platform improved system security and provided a scalable architecture for future operations.