Ref: https://learn.cantrill.io/courses/1820301/lectures/41301492

• Summary
• Contents:

S3 Events - Architecture

Diagram: https://github.com/acantril/aws-sa-associate-saac03/blob/main/0700-SIMPLE_STORAGE_SERVICE(S3)/00_LEARNINGAIDS/S3EventNotifications.png

• 🔧 Get notified when certain events happen in your S3 bucket
  • Examples: new object created, objected deleted, etc
  • Can power event-driven architectures (EDAs)
• When events happen, they're sent as JSON objects to destination(s)
• Update notification subresource in the bucket with your desired configuration:
  • Define destination for S3 events. 3 possible targets:
    1. Lambda functions
    2. SQS queues
    3. SNS topics
    • ‼️ Destination/target needs an attached resource policy authorizing S3 Principal to interact with them!
  • Define which events will be sent. Types of events that can be sent:
    • Object created (Put, Post, Copy, CompleteMultiPartUpload)
    • Object deletion (*, Delete, DeleteMarkerCreated)
    • Object restore (Post (Initiated), Completed) → restoring from Glacier (FR & DA)
    • Object replication (OperationMissedThreshold, OperationReplicatedAfterThreshold, OperationNotTracked, OperationFailedReplication)
• ‼️ S3 Events is an old & simple feature… Amazon EventBridge should be your DEFAULT for event-driven architectures (EDAs)!!
  • EventBridge supports more types of events & more destinations/targets