A company needs continuous monitoring for threats, malicious activity, and unauthorized behavior across its AWS accounts, workloads, and S3 buckets. Which AWS service provides this capability?

Amazon GuardDuty is a threat detection service that continuously monitors for malicious activity and unauthorized behavior to protect your AWS accounts, workloads, and data stored in Amazon S3. It uses machine learning, anomaly detection, and integrated threat intelligence to identify and prioritize potential threats. AWS Shield is a managed Distributed Denial of Service (DDoS) protection service. AWS Firewall Manager simplifies the administration and maintenance tasks across multiple accounts and resources for services like AWS WAF and AWS Shield Advanced. Amazon Inspector is an automated security assessment service that helps improve the security and compliance of applications deployed on AWS by identifying vulnerabilities and deviations from best practices.