Amazon CloudWatch is a monitoring and observability service provided by Amazon Web Services (AWS). It is designed to monitor AWS resources, as well as custom applications and services that run on AWS, providing metrics, logs, and alarms for these resources.

CloudWatch can collect and track metrics, collect and monitor log files, and set alarms. It can also automatically react to changes in AWS resources and provide automated actions, such as sending notifications or triggering auto-scaling events.

Some of the key features of CloudWatch include:

• Metrics: CloudWatch can collect and monitor metrics from AWS services, custom applications, and resources. It provides pre-defined metrics for AWS services such as EC2, RDS, and ELB, and also allows you to create custom metrics.
• Logs: CloudWatch can collect, monitor, and analyze log files from AWS services, custom applications, and resources. It can also provide real-time log data to help troubleshoot issues and identify trends.
• Alarms: CloudWatch can set alarms based on metrics, logs, and events, and can automatically trigger actions such as sending notifications or scaling AWS resources.
• Dashboards: CloudWatch provides customizable dashboards to visualize metrics and logs in real time, helping to identify trends and diagnose issues.
• Integration: CloudWatch integrates with other AWS services such as Amazon SNS, AWS Lambda, and Amazon EC2 Auto Scaling, providing a complete solution for monitoring and managing AWS resources.