A DevOps team supports an application that sends many requests through multiple external systems.

Configure an Amazon CloudWatch metric filter on the application log group that uses a regular expression to match external requests that result in errors. Use the CloudWatch metric to publish a custom metric. Configure a CloudWatch alarm to alert an SNS topic when there are more than 10 errors during a 5-minute period.

Publish a custom metric for requests to the external systems that result in errors. Configure an Amazon CloudWatch alarm to invoke an AWS Lambda function when there are more than 10 errors during a 5-minute period. Configure the Lambda function to notify an SNS topic.

Use Amazon CloudWatch anomaly detection on the log group. Use a filter pattern of ERROR with an evaluation frequency of 5 minutes. Configure a CloudWatch alarm for the LogAnomalyPriority dimension to breach on a static threshold of 10. Configure the alarm to notify an SNS topic.

Configure an Amazon CloudWatch subscription filter to send data to an AWS Lambda function. Configure the Lambda function to parse the log entries and publish a custom metric for failed requests to the external systems. Configure a CloudWatch alarm to notify an SNS topic when there are more than 10 errors during a 5-minute period.