Customer Challenges

A top-10 U.S. bank was running critical payment and settlement processing on 40-year-old COBOL mainframes. Aging infrastructure, a shrinking COBOL talent pool, and the need to support real-time payment rails made modernization urgent.

Problem

• 400,000+ lines of undocumented COBOL with no surviving original developers.
• Manual code analysis estimated at 3–4 years for a full rewrite.
• Real-time payment requirements (FedNow, RTP) impossible to implement on the legacy stack.
• Integration with 23 downstream systems required parallel operation during transition.

Solution Highlights

AidenAI deployed AiDAP's AI-powered modernization agents to autonomously analyze, document, translate, and validate the COBOL codebase into Java microservices — running in parallel with the live mainframe during the transition.

• AiDAP Discovery Agent mapped all 400,000+ lines of COBOL, generating full business logic documentation.
• Technology Displacement Agent translated COBOL to idiomatic Java Spring Boot microservices with 97% confidence scoring.
• Parallel Testing Agent ran 1.2M automated regression tests, validating output parity with the mainframe.
• Canary deployment enabled gradual traffic migration with instant rollback capability.
• New real-time payment capabilities (FedNow, RTP) added post-migration in 6 additional weeks.

Key Success Metrics