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Amazon Simple Notification Service (Amazon SNS) is a notification service provided as part of Amazon Web Services since 2010. It provides a service for sending messages.
Amazon SNS acts as a single message bus that can message to a variety of devices and platforms. A single code interface can address all of these equally, or message formats can be tailored to the particular needs of each platform. Amazon SNS can also deliver messages by SMS to 200+ countries.

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