Fujitsu has launched a generative AI service that modernises legacy IT systems by analysing source code and generating design documents. The Application Transform platform, powered by Fujitsu Kozuchi, targets complex environments such as COBOL-based enterprise systems.

The service aims to significantly reduce the time and expertise required for system documentation, cutting workloads by up to 97 percent. Fujitsu combines proprietary code analysis with Knowledge Graph-enhanced retrieval to improve accuracy and reduce missing or inconsistent outputs.

Enhanced by generative AI, the system produces structured, readable documentation while ensuring consistency across large, complex codebases. Reported improvements include higher comprehensiveness and significantly better readability compared with conventional methods.

Fujitsu plans to offer the service as SaaS in Japan from 30 March 2026, with additional capabilities such as automated code rewriting and system maintenance support expected in future updates.