Amazon CloudWatch Rule Icon

Amazon CloudWatch Rules automate responses to state changes in your AWS resources or custom metrics. For example, you can configure a rule to automatically scale your EC2 instances up or down based on CPU utilization, send an email alert when a specific metric exceeds a threshold, or trigger a Lambda function in response to a CloudWatch event. Essentially, they allow you to react proactively to changes in your AWS environment, improving operational efficiency and reducing manual intervention.