Which security service automatically recognizes and classifies sensitive data or intellectual property on AWS?

Explanations:

Amazon GuardDuty is a threat detection service that continuously monitors for malicious activity and unauthorized behavior, not specifically for data classification.

Amazon Macie is a data security and privacy service that uses machine learning to automatically recognize and classify sensitive data, making it the correct option.

Amazon Inspector is a security assessment service for applications deployed on AWS, focusing on vulnerabilities and best practices rather than data classification.

AWS Shield is a managed DDoS protection service designed to safeguard applications against Distributed Denial of Service (DDoS) attacks, not for classifying sensitive data.