Which AWS service is primarily used for monitoring and logging resources?

Amazon CloudWatch is the primary service used for monitoring and logging resources within AWS. It provides a robust platform for tracking metrics, collecting log files, setting alarms, and taking automated actions based on predefined thresholds. Amazon CloudWatch allows users to gain insights into application performance, detect anomalies, and optimize resource utilization across various AWS services.

Its capabilities include monitoring the performance of AWS services like Amazon EC2, DynamoDB, and RDS, making it an essential tool for system health monitoring. Users can visualize logs and performance data through dashboards, helping teams make informed decisions based on real-time data. Furthermore, CloudWatch integrates with other AWS services, enhancing its functionality and offering seamless alerts and notifications.

While other services mentioned may have specific functionalities, they do not focus primarily on monitoring and logging as CloudWatch does. For instance, Amazon S3 is used for scalable storage solutions, Amazon CloudFront is a content delivery network, and Amazon EC2 provides compute capacity in the cloud. None offer the specialized monitoring and logging capabilities that are central to the function of CloudWatch.