AWS Security refers to the practices and tools provided by Amazon Web Services to protect data, applications, and infrastructure in the cloud. AWS follows a Shared Responsibility Model, where AWS secures the underlying infrastructure, while customers are responsible for securing their data, configurations, and access controls. Key AWS security services include IAM for access management, encryption for data protection, monitoring tools like CloudTrail, network security with VPCs, and threat detection through services like GuardDuty. AWS offers scalable, automated, and compliant solutions to help organizations safeguard their cloud environments.