Migrating a leading multi-line insurer’s legacy Gen application to COBOL

The Client

Our client is part of a global multi-line insurer operating in over 215 countries and territories. With approximately 55,000 employees, the client provides a wide range of property, casualty, and life insurance products and services.

The Challenge

• The existing CA Gen platform was costly to maintain and posed operational risks due to limited internal expertise.
• Business knowledge had been lost over time due to outsourcing, making it difficult to fully understand the application.
• The migration needed to span multiple geographies and deliver functionally equivalent, maintainable COBOL code.
• The solution had to meet the client’s compliance and quality assurance standards.
• The entire project had to be completed within 12 months.

The Solution

TXP began with a discovery phase using automated analysis tools to extract detailed insights from the CA Gen models. This helped the client understand the scope, complexity, and potential risks of the migration. A proof of concept was then delivered on a small portion of the application to validate the approach.

The full migration was executed in two phases using customised code generators tailored to the client’s requirements. Post-migration, TXP applied a ‘post-processing’ approach to refine the code and ensure it was optimised for maintainability and performance.

The Benefits

• Eliminated dependency on CA Gen, reducing cost and operational risk.
• Delivered a high-performance, functionally equivalent COBOL application.
• Completed the full migration—including warranty support—within 9 months.
• Preserved business and application knowledge through automated discovery and expert analysis.
• Improved maintainability with easier access to COBOL skills and clear documentation.