Securing cloud resources is no easy task—each provider has its unique set of tools, processes, and challenges, demanding specialized expertise. This book cuts through the complexity, delivering practical guidance on embedding security best practices across the core infrastructure components of AWS, Azure, and GCP. It equips information security professionals and cloud engineers with the skills to identify risks and implement robust security controls throughout the design, deployment, and maintenance of public cloud environments. Starting with the shared responsibility model, cloud service models, and deployment models, this book helps you get to grips with fundamental concepts such as compute, storage, networking, identity management, and encryption. You’ll then explore common threats and compliance requirements for cloud environments. As you progress, you'll implement security strategies across deployments ranging from small-scale environments to enterprise-grade production systems, including hybrid and multi-cloud setups. This edition expands on emerging topics like GenAI service security and DevSecOps, with hands-on examples leveraging built-in security features of AWS, Azure, and GCP. By the end of this book, you'll confidently secure any cloud environment with a comprehensive understanding of cloud security principles.