Yes, Amazon GuardDuty is a security service that combines intelligent threat detection and continuous monitoring of your AWS environment to protect your AWS accounts and workloads. GuardDuty uses a combination of threat intelligence, network traffic analysis, and other tools to detect potential malicious activity and unauthorized behavior. It is an Intrusion Detection System/Intrusion Prevention System (IDS/IPS) in that it guards against malicious threats by monitoring your AWS environment and alerting you of suspicious activity. GuardDuty also provides the ability to quickly respond to threats, as the alerting capability is integrated with Amazon CloudWatch Events, allowing for automated response options.