Fujitsu Launches AI-Driven Legacy System Modernization Service

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Fujitsu Limited today announced the Japan launch of the Fujitsu AI-driven Modernization Service. Available from today, the service is designed to support the sustainable growth of businesses and organizations, and combines Fujitsu's practical modernization expertise cultivated through decades of system integration with generative AI. By leveraging multiple AI models and the expertise of specialized engineers, the service automates and optimizes modernization initiatives centered on rewrite and rehost approaches. The service supports customers’ modernization efforts rapidly and efficiently, and can shorten migration periods by approximately 40%.

In recent years, with the acceleration of digital transformation (DX) and AI transformation (AX) in enterprises, the modernization of underlying legacy systems has become an urgent issue for strengthening competitiveness and responding quickly to environmental changes. This is particularly critical in sectors such as finance, public services, and healthcare, where legal revisions are frequent. Similarly, manufacturing and distribution industries, which require complex operational management, have accumulated years of operational know-how in legacy systems.

To address these challenges, this service combines Fujitsu's proprietary AI platform Fujitsu Kozuchi and the Takane large language model (LLM) [1], with cutting-edge AI technologies such as Anthropic PBC's Claude and OpenAI's GPT. It also integrates the practical knowledge of Fujitsu's specialized engineers, Modernization Meisters, who are deeply familiar with legacy technologies. This fusion enables speedy and high-quality modernization, supporting customers' rapid business transformation.

Through the provision of this service, Fujitsu will help various customers establish leadership in data utilization and contribute to the realization of rapid data-driven management decisions.