AWS::SNS::Topic

• Pub/Sub model
• It's useful when you have many receivers for a message

• SNS integrates with many AWS services (e.g., CloudWatch)

• APIs

• TopicPublish: create topic, create subscription, publish to a topic
• DirectPublish: for mobile apps

Fan Out Pattern

• Publish once to SNS, Receive in all SQS subscribers
• This way, the clients can that the advantages for SQS
• Delayed processing
• Retries
• Fifo
• Filtering

Properties

• https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-sns-topic.html

Type: AWS::SNS::Topic
Properties:
  ArchivePolicy: Json
  ContentBasedDeduplication: Boolean
  DataProtectionPolicy: Json
  DeliveryStatusLogging:
    - LoggingConfig
  DisplayName: String
  FifoTopic: Boolean
  KmsMasterKeyId: String
  SignatureVersion: String
  Subscription:
    - Subscription
  Tags:
    - Tag
  TopicName: String
  TracingConfig: String

FifoTopic

• SQS FIFO stores the messages in the exact order they take place