
Sony Bank and Fujitsu Achieve 30% Faster Core Banking Development Using Generative AI
Sony Bank and Fujitsu Limited announced on September 14, 2026, the full-scale operational application of generative artificial intelligence in building Sony Bank's core banking system. Operating on Amazon Web Services (AWS) via Fujitsu's Core Banking xBank architecture, the system utilizes AI agents powered by Anthropic's Claude on Amazon Bedrock. The technology connects design documentation, source code, and test assets to streamline development stages from basic design through integration testing.
The initial phased deployment confirmed a 30 percent reduction in development timelines compared to traditional software engineering methodologies, while maintaining quality control through human oversight. Sony Bank and Fujitsu plan to expand AI utilization across additional operational systems, establishing a repeatable AI-driven engineering framework for the broader financial services industry.


