What is the best AWS service for sending SMS via REST WEB API calls?

Question

I would like to use an AWS service as it is possible to do with Twillio. I have an application that manages customers (so I have several thousand phone numbers). This application must be able to send WEB REST API calls to a service (AWS) to send SMS. I had thought of SNS, but that doesn't seem like the right service to me because the phone number won't be in AWS. I thought of Pinpoint. Is this the right service for you? Thank you

Accepted Answer

It depends what you're trying to do.   You're on the right track, Pinpoint and SNS are both options for mobile messaging.

Pinpoint: https://docs.aws.amazon.com/pinpoint/latest/apireference/operations.html
SNS (without subscribing the phone number to a topic): https://docs.aws.amazon.com/sns/latest/dg/sms_publish-to-phone.html

Keep in mind there is a SNS "sandbox" mode for SMS to protect reputation and not spam: https://docs.aws.amazon.com/sns/latest/dg/sns-sms-sandbox.html.  Once out of the sandbox mode, you can send SMS messages to any recipient and not just verified ones.

Answer

I can't find how SNS can be invoked via a web service call (eg. HTTP), I can only find documentation and examples using Amazon SDKs for specific languages. I don't want to build the SDK into my application (all the other AWS services we use are REST endpoints... why not this one?).

What is the best AWS service for sending SMS via REST WEB API calls?

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