If you have a large amount of cloud resources, we recommend that you add these resources to application groups, and then apply alert templates to the application groups. This way, you can manage alert rules in a simplified manner. Alert templates must be used together with application groups. You can apply alert templates to application groups to create alert rules for resources from different services.
Prerequisites
Background information
After you apply an alert template to an application group, CloudMonitor automatically deletes the existing alert rules and creates new alert rules based on the alert template.