Kakuya, a 100-year-old company, is modernizing its core systems using generative AI. Previously, understanding the legacy system, written in Visual Basic and Oracle, took an estimated 450 person-months. By employing AI tools, including Anthropic's Claude Code, Kakuya aims to decipher the system's business logic in approximately two months. This initiative was presented at AWS Summit Japan 2026, highlighting the potential of AI to accelerate the modernization of aging IT infrastructure. AI
IMPACT Accelerates modernization of aging IT infrastructure by reducing the time and cost of understanding legacy codebases.
RANK_REASON The article details the application of generative AI tools by a company to solve a specific IT infrastructure problem.
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- Amazon Bedrock
- Amazon Web Services
- Anthropic
- AWS
- AWS Summit Japan 2026
- Claude Code
- generative artificial intelligence
- Kakuya
- Oracle
- Visual Basic
- VMware
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