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  Cloud Security & IAM: Users, Roles, Policies, Security Groups, and Key Management 📅 Published: Feb 2026 ⏱️ Estimated Reading Time: 18 minutes 🏷️ Tags: Cloud Security, IAM, Security Groups, Key Management, Access Control, AWS, Azure, GCP Introduction: Security is Shared Responsibility When you move to the cloud, security does not become someone else's problem. Cloud providers secure the infrastructure—the data centers, hardware, and foundational services. You are responsible for everything you put in the cloud: your data, your applications, your access controls, and your configurations. This shared responsibility model means you must understand how to secure your cloud environment. The tools for cloud security fall into three categories: Identity and Access Management (IAM)  — Who can do what Network Security  — What traffic is allowed where Data Protection  — How data is encrypted and protected This guide covers the foundational security services you need to ...