Cloud Security Alliance Security Guidance v5 is a comprehensive reference document that provides cloud security best practices across 12 domains. Released in July 2024, this fifth version builds on previous iterations with updated content reflecting modern cloud security challenges. The guidance covers foundational knowledge and specialized topics including Cloud Computing Concepts and Architectures, Cloud Governance, Risk Audit and Compliance, Organization Management, Identity and Access Management, Security Monitoring, Infrastructure and Networking, Cloud Workload Security, Data Security, Application Security, Incident Response and Resilience, and Related Technologies and Strategies. Version 5 includes new content on Zero Trust, Generative AI, CI/CD, Security Monitoring and Operations, Resilience, Cloud Telemetry and Security Analytics, and Data Lakes. The document has reduced coverage of Laws and Regulations and removed the Security-as-a-Service domain compared to previous versions. This guidance document is designed for security professionals seeking to understand modern cloud components and implement cloud security best practices. It provides actionable skills for addressing cloud security challenges in complex environments. The document is available for download and is no longer the primary study material for the Certificate of Cloud Security Knowledge (CCSK) exam, though it offers more comprehensive domain coverage than the CCSK v5 Study Guide.