Several enhancements have been made to the functionality and user experience of the Amazon SNS console in the AWS GovCloud (US) region. Amazon Simple Notification Service (SNS) is a flexible, fully managed pub/sub messaging and mobile notifications service for coordinating the delivery of messages to subscribing endpoints and clients. These improvements to the SNS console have made navigation and categorization of information easier, and allow you to now view up to 100,000 SNS topics, subscriptions and endpoints. You also can now run data validation for items such as resource names, ARNs and policies.