Topics are logical communication channels within SNS. A publisher sends messages to a topic, and the topic broadcasts the messages to all its subscribers. This allows for one-to-many communication, where multiple subscribers receive the same message. Topics are created and managed using the AWS Man…Topics are logical communication channels within SNS. A publisher sends messages to a topic, and the topic broadcasts the messages to all its subscribers. This allows for one-to-many communication, where multiple subscribers receive the same message. Topics are created and managed using the AWS Management Console, the SNS API, or the AWS CLI. Topics provide access control and permissions through resource-based policies, allowing you to define which AWS accounts may publish messages to the topic.
Guide: Answering AWS SNS Topics Questions in the AWS Solution Architect Exam
What it is: Amazon's SNS (Simple Notification Service) Topics is a web service that enables applications, end-users and devices to instantly send and receive notifications from the cloud.
Why it is important: SNS Topics promotes the broadcasting of notifications to a large number of subscribers, which is crucial for scaling distributed systems and serverless applications.
How it works: Deployed as a 'publish-subscribe' (pub-sub) communication paradigm, you create a 'topic' and 'publish' messages to this topic. Any application or device 'subscribed' to this topic will instantly receive these notifications.
Exam Tips: Answering Questions on Topics: 1. Understand the pub-sub model and SNS topics architecture. 2. Remember, a topic is an 'access point' for allowing recipients to dynamically subscribe for identical copies of the same notification. 3. Know how to create, delete and list SNS topics through AWS management console. 4. Understand how to set up SMS and email protocols for a topic. 5. Be aware of security protocols related to SNS topics.