AWS Fault Injection Service (FIS) now allows you to preview targets resources before you start an FIS experiment to verify that your experiment is properly configured. In addition to target preview, FIS APIs now also return the ARNs of experiments, experiment templates, and actions in the response so that you have the information you need to uniquely identify these resources.

FIS is a fully managed service for running fault injection experiments to improve an application’s performance, observability, and resilience. Within FIS, you can create an experiment template by defining a few key configurations, including actions and targets. After you configure an experiment template, you can generate a target preview to determine the resource ARNs of the targets. To generate the preview, FIS runs an experiment that skips all actions. The preview provides an approximation of the actual resources targeted. While the actual resources that are targeted may vary because resources can be removed, updated, or sampled randomly, it conveys the overall scale of what will actually be targeted when the experiment runs.

Target preview is now available in all AWS Regions where FIS is available, including the AWS GovCloud (US) Regions, at no additional costs. To get started, you can log into the AWS FIS Console, or you can use the FIS API, SDK, or CLI. To learn more about FIS, visit the FIS User Guide.