What is AWS CloudWatch?

In this article, I will explain What is AWS CloudWatch.

Amazon CloudWatch is a monitoring and observability service provided by Amazon Web Services (AWS). CloudWatch enables you to collect, monitor, and analyze various metrics, logs, and events from your AWS resources and applications in real-time. It helps you gain insights into the performance, health, and operational efficiency of your infrastructure and applications, allowing you to detect and respond to issues quickly.

Key Features

The following list shows key features and concepts of Amazon CloudWatch.

  1. Metrics. Basically, CloudWatch provides a wide range of pre-defined metrics for AWS services such as Amazon EC2, Amazon RDS, Amazon S3, and more. These metrics represent performance data related to resource usage, such as CPU utilization, network traffic, and disk I/O.
  2. Custom Metrics. You can also create custom metrics to monitor specific aspects of your applications and resources that are not covered by the pre-defined metrics.
  3. Alarms. Furthermore, CloudWatch Alarms allow you to set threshold-based alerts on metrics. When a metric crosses a specified threshold, an alarm is triggered, and you can configure actions to be taken, such as sending notifications or auto-scaling resources.
  4. Dashboards. In fact, CloudWatch Dashboards enable you to create customized visualizations of metrics, alarms, and other data to monitor the health of your applications and services.
  5. Logs. Similarly, CloudWatch Logs allows you to collect, store, and analyze log data from your applications and resources. You can search and filter logs to troubleshoot issues and gain insights into application behavior.
  6. Log Insights. Basically, CloudWatch Log Insights provides interactive query and analysis capabilities for your log data. It helps you identify patterns, anomalies, and trends in your logs.
  7. Events. Likewise, CloudWatch Events allow you to respond to changes and events in your AWS resources. You can configure rules to trigger automated actions when specific events occur.
  8. Integration with AWS Services. Also, CloudWatch integrates with various AWS services, enabling you to monitor and analyze metrics and logs from services like AWS Lambda, Amazon EC2, Amazon RDS, and more.
  9. Retention and Archiving: CloudWatch allows you to define retention policies for your metrics and log data, ensuring that you retain the data you need for analysis and compliance.
  10. Application Insights: CloudWatch Application Insights provides automated application monitoring and troubleshooting for applications running on Amazon EC2 instances or on-premises.


Amazon CloudWatch is a powerful tool for monitoring the health and performance of your AWS resources and applications. It helps you proactively identify and resolve issues, optimize resource utilization, and maintain a reliable and efficient infrastructure.

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