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---
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tags: [AWS]
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---
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# AWS CloudWatch
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AWS CloudWatch is a monitoring and observability service offered by Amazon Web
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Services (AWS). It is designed to help users collect, track, and analyze various
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metrics, logs, and events related to their AWS resources and applications
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running on the AWS cloud. CloudWatch enables users to gain operational insights
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and take timely actions to maintain the performance, availability, and health of
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their infrastructure and applications.
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## Key features
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- Metrics
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- CloudWatch collects and stores metrics from various AWS services, such as
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EC2 instances, Lambda functions, and RDS databases. Users can monitor these
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metrics in real-time, set alarms based on thresholds, and visualize them
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through customizable dashboards.
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- Logs
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- CloudWatch Logs enables users to collect, store, and analyze log data from
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AWS resources and applications.
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- Events
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- Events allows users to respond to changes in their AWS resources
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automatically by triggering actions such as sending notifications, invoking
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Lambda functions, or starting/stopping EC2 instances.
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- Alarms
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- Users can set alarms based on specified metric thresholds. When an alarm is
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triggered, CloudWatch can send notifications or automatically take
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corrective actions.
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- Dashboards
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- Dashboards provide customizable, at-a-glance visualizations of various
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metrics and logs, making it easier to monitor the health and performance of
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AWS resources and applications.
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## Accessing CloudWatch
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CloudWatch can usually be accessed directly from within the dashboard for the
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given AWS service under the "Monitor" tab. For example with AWS Lambda:
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In addition to graphical metrics, we can also view specific logs for each event
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and execution of the given service. In the case of a Lambda function:
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