SNS notification types (email, SMS, Lambda) in AWS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Amazon SNS used for?

Amazon SNS (Simple Notification Service) is used to send messages or notifications to multiple subscribers through different protocols like email, SMS, or Lambda functions.

beginner

How does SNS send notifications to email subscribers?

SNS sends notifications to email subscribers by sending an email message to the subscribed email address when a message is published to the topic.

beginner

What is required to send SMS notifications using SNS?

To send SMS notifications, the subscriber must be a valid phone number, and the SNS topic must support SMS protocol. AWS handles the delivery to the phone via SMS.

intermediate

How does SNS trigger a Lambda function?

SNS can trigger a Lambda function by invoking it directly when a message is published to the SNS topic, allowing automated processing of the message.

intermediate

What are the benefits of using Lambda as an SNS subscriber?

Using Lambda as an SNS subscriber allows automatic, serverless processing of messages, enabling custom logic, data transformation, or integration with other AWS services without managing servers.

Which protocol does SNS NOT support for notifications?

A FTP

B SMS

C Lambda

D Email

SNS supports Email, SMS, and Lambda protocols but does not support FTP for notifications.

What must a user do to receive SNS email notifications?

A Create an IAM user

B Just provide the email address without confirmation

C Subscribe and confirm the subscription via email

D Enable SMS on the email

Users must subscribe and confirm the subscription by clicking a link sent to their email to start receiving SNS notifications.

What happens when SNS publishes a message to a Lambda subscriber?

A Lambda sends an email

B Lambda function is invoked automatically with the message

C SNS stores the message in S3

D Nothing happens

SNS automatically invokes the subscribed Lambda function with the published message as input.

Which of these is a valid SNS notification type?

A Email

B FTP

C HTTP

D Both A and C

SNS supports multiple protocols including Email and HTTP, but not FTP.

To send SMS notifications via SNS, what is required?

A A valid phone number subscribed to the topic

B An email address

C A Lambda function

D An S3 bucket

SNS sends SMS notifications to valid phone numbers subscribed to the topic.

Explain how SNS can send notifications using email, SMS, and Lambda.

Think about how each subscriber type receives or processes the message.

Describe the benefits of using Lambda as a subscriber in SNS notifications.

Consider what Lambda adds beyond simple message delivery.