Amazon Simple Notification Service (Amazon SNS) has introduced additional usage metrics in Amazon CloudWatch for the following service quotas: ‘Topics per Account’, ‘Filter Policies per Account’, and ‘Pending Subscriptions per Account’. Under the ‘AWS/Usage’ namespace, you can now view the ‘ApproximateNumberOfTopics’, ‘ApproximateNumberOfFilterPolicies’, and ‘ApproximateNumberOfPendingSubscriptions’ metrics to monitor your usage of these Amazon SNS resources. Moreover, using AWS Service Quotas , you can also view your utilization metrics per quota, and create Amazon CloudWatch alarms to notify you when your utilization of a given quota exceeds your configurable threshold. This enables you to more precisely adapt your utilization of Amazon SNS, based on your applied quotas.