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I wonder if AWS will turn to Twilio to replace the SMS capabilities of SNS which are aging and limited with respect to modern features such as emojis and long messages.

Twilio did a presentation at re:Invent last year talking about how they power AWS SMS messages.

I had they're one of the providers but I've also heard, from a smaller Twilio competitor at a conference, that AWS utilizes several SMS providers, which might make sense regarding the extra limitations.

While Twilio and Amazon Connect have some integrations it does not appear that Connect is built on top of Twilio. The Amazon FAQs says that all telephony services are charged separately by "AMCS LLC" which I'm guessing is a telco they've set up to do this at the lowest possible margins. If they went through someone else their pricing would be higher.

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