Customers that use Amazon Simple Notification Service (Amazon SNS) to send text messages (SMS) to mobile users can now host their application in the AWS GovCloud (US-West) Region. Using Amazon SNS, customers can send a message directly to a phone number , or can send a message to multiple phone numbers at once by subscribing those phone numbers to a topic and sending messages to the topic. Customers can send SMS text messages directly to mobile phone numbers in more than 200 countries.