AWS CLI Command Reference

Note:

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AWS CLI v1 entered maintenance mode on August 5, 2026 and will reach end-of-support on July 15, 2027. During maintenance mode, releases are limited to critical bug fixes and security issues. AWS CLI v1 will not receive API updates for new or existing services, or be updated to support new regions. For more information, see the maintenance mode announcement.

We recommend that you migrate to AWS CLI version 2. See the installation instructions and migration guide.

[ aws ]

synthetics

Description

You can use Amazon CloudWatch Synthetics to continually monitor your services. You can create and manage canaries , which are modular, lightweight scripts that monitor your endpoints and APIs from the outside-in. You can set up your canaries to run 24 hours a day, once per minute. The canaries help you check the availability and latency of your web services and troubleshoot anomalies by investigating load time data, screenshots of the UI, logs, and metrics. The canaries seamlessly integrate with CloudWatch ServiceLens to help you trace the causes of impacted nodes in your applications. For more information, see Using ServiceLens to Monitor the Health of Your Applications in the Amazon CloudWatch User Guide .

Before you create and manage canaries, be aware of the security considerations. For more information, see Security Considerations for Synthetics Canaries .