For one of my clients I have AWS SNS set up for Push Notifications to IOS and Android devices. Another client wants SMS messages to phone numbers. I see that AWS SNS supports sending SMS messages, this new client only has an AWS account they don't have an Apple account or Google account. So ...
Do I need to create applications with the endpoints for those two services to send SMS messages? Which means setting up the Apple Accounts and Google Accounts? How does AWS know which provider to send the SMS message to? With SNS sends I had the device ID from the mobile app to identify the type.
Sorry if I am rambling but I appreciate any insight on this.