Amazon Web Services - Simple Notification Service (SNS) Overview

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What is Amazon Simple Notification Service (SNS)?

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A web service that automates the process of sending notifications to subscribers, supporting both application-to-person and application-to-application communication.

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How does SNS prevent data loss?

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By storing data across multiple availability zones.

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What triggers an AWS CloudWatch alarm in relation to SNS?

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When the CPU utilization of an instance goes above 80%.

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What are the two types of subscribers in SNS?

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Application-to-application (A2A) and application-to-person (A2P) subscribers.

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What is the primary benefit of using SNS for microservices?

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It decouples microservices and distributed systems, allowing them to communicate asynchronously.

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What protocols does SNS support for sending notifications?

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HTTP, HTTPS, email, SMS, and AWS Lambda functions.

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What is the pricing model for Amazon SNS?

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SNS follows a pay-as-you-go model with costs based on requests and data payload.

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What is the first step to create an SNS topic?

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Go to the Amazon SNS dashboard and click on the Create Topic button.

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What is the role of publishers in SNS?

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They send messages to a topic without specifying a destination.

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What is the significance of a topic in SNS?

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It acts as a logical access point and communication channel between publishers and subscribers.