Which service is primarily used for monitoring AWS resources?

The service primarily used for monitoring AWS resources is Amazon CloudWatch. It is designed to provide a unified view of your AWS resources and applications, enabling real-time monitoring and logging. Through CloudWatch, users can collect and track metrics, collect log files, and set alarms, providing insights into the performance and operational health of AWS resources.

CloudWatch allows users to visualize resource utilization and application performance, which facilitates troubleshooting and optimization tasks. Its capabilities include automatic scaling based on thresholds, detailed monitoring of specific AWS services, and alert notifications based on predefined conditions, making it an essential tool for maintaining the availability and performance of cloud applications.

In contrast, other services mentioned have specific use cases: AWS Inspector focuses on automated security assessments for applications, AWS Config provides resource configuration tracking and compliance auditing, and Amazon GuardDuty is concerned with threat detection and continuous monitoring for malicious activity within the AWS environment. While all these services play a role in resource management and security, CloudWatch stands out for its dedicated functions related to operational monitoring.