Amazon Web Services (AWS) 

Amazon GuardDuty is an intelligent threat detection service that continuously monitors AWS accounts, workloads, and data for malicious activity and unauthorized behavior. It analyzes multiple data sources including AWS CloudTrail event logs, VPC Flow Logs, and DNS query logs using machine learning, anomaly detection, and integrated threat intelligence. 

GuardDuty can detect threats such as cryptocurrency mining, credential compromise, unauthorized infrastructure deployments, and communication with known command-and-control servers. It requires no infrastructure to manage and can be enabled with a single click across all AWS accounts in an organization, providing immediate security visibility without impacting existing workloads.