Through the Terraform toolchain, Silver Lining IAC solution combines modular design, version control and CI/CD integration to achieve rapid orchestration and unified operation and maintenance of multi-cloud platform resources. The solution includes standardized module libraries, compliance checks, drift repair, and automated monitoring to support coded governance of enterprise-level infrastructure, reduce the risk of manual intervention, and improve operation and maintenance efficiency and safety. It can achieve code version traceability, hierarchical audit of permissions, and centralized control of multi-cloud resources to meet agile delivery requirements in complex business scenarios.