Amazon SNS vs Twilio


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Amazon SNS
Amazon Simple Notification Service (SNS) is a push messaging service that makes it simple & cost-effective to push to mobile devices & distributed services.
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Twilio
Twilio powers the future of business communications, enabling phones, VoIP, and messaging to be embedded into web, desktop, and mobile software. We take care of the messy telecom hardware and expose a globally available cloud API that developers can interact with to build intelligent & complex communications systems. As your app’s usage scales up or down, Twilio automatically scales with you. You only pay for what you use - no contracts, no shenanigans.
Face to face in the news:


2016 - VoIP platform provider Twilio launches add-on marketplace to take on Amazon SNS


Twilio announced the launch of its add-ons marketplace. Using these add-ons, developers who use Twilio’s API to power the messaging features of their apps and services can easily combine Twilio’s services with those of its partners. Twilio will handle the billing for its partners and developers can access their services with a single API call. For now, Twilio is working with 18 partners, including the likes of IBM Watson, NextCaller, WhitePages Pro, Mobile Commons and Payfone.  These add-ons are available for Twilio’s Programmable SMS, Programmable Voice and Twilio Lookup services.