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China Railway Corporation, the world's leading railway network, faced significant challenges due to its large business scale. The company's IT infrastructure was under pressure to deliver higher performance, stability, safety, usability, and extensibility. The company's IT development journey moved from mainframe computers to minicomputers, and then to the x86-based OpenStack platform. However, this transition presented several challenges. The traditional project-driven IT infrastructure construction mode was resource-intensive and complex. The migration of a large amount of data and applications from the minicomputer system to an open source environment with x86 servers was problematic. The OpenStack modules were loosely coupled and unstable, and there were bottlenecks in large-scale cluster deployment. Additionally, there was a shortage of OpenStack technical experts and talent, which limited early operation and management and slowed the development of tools for daily automatic operation.