Removing an alarm widget from a CloudWatch dashboard - Amazon CloudWatch
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Removing an alarm widget from a CloudWatch dashboard

To remove an alarm widget from a dashboard
  1. Open the CloudWatch console at https://console.amazonaws.cn/cloudwatch/.

  2. In the navigation pane, choose Dashboards, and then choose a dashboard.

  3. Hover over the widget, choose Widget actions, and then choose Delete.

  4. Choose Save dashboard. If you attempt to navigate away from the dashboard before you save your changes, you're prompted to either save or discard your changes.