Which Amazon AWS threat detection service monitors AWS accounts and workloads for malicious activity?

Amazon GuardDuty analyzes AWS CloudTrail event logs, VPC Flow Logs, and DNS logs using machine learning and threat intelligence feeds to identify threats such as unauthorized access, compromised EC2 instances, and reconnaissance activity. It is purpose-built for AWS environments and requires no additional infrastructure to deploy.

Security Center is a Microsoft Azure service (rebranded as Microsoft Defender for Cloud) and has no relationship to AWS.

BeyondCorp is Google's zero-trust access framework and network security model, not an AWS threat detection service.

Microsoft Sentinel is a cloud-native SIEM and SOAR platform offered by Microsoft Azure, not Amazon AWS.