AWS S3 Batch Operations Overview

• Purpose: S3 Batch Operations allow you to manage and modify multiple S3 objects in a single request.
• Use Cases:
  • Modifying metadata and properties of multiple S3 objects.
  • Copying objects between S3 buckets.
  • Encrypting all unencrypted objects in S3 buckets (important for exams).
  • Modifying Access Control Lists (ACLs) or tags.
  • Restoring objects from S3 Glacier in bulk.
  • Invoking AWS Lambda functions on a set of objects.

Advantages of Using S3 Batch Operations

• Automated Retries: Handles failures and retries operations as needed.
• Progress Tracking: Allows monitoring of the status of the batch operation.
• Completion Notifications: Sends alerts when operations are completed.
• Report Generation: Provides detailed reports on the operations performed.

How to Generate a List of Objects for S3 Batch

1. S3 Inventory: Use this feature to generate a comprehensive list of objects in S3.
2. S3 Select: Filter the object list to include only the desired objects for the batch operation.

Steps for Performing S3 Batch Operations

1. Generate a list of objects using S3 Inventory.
2. Filter the list using S3 Select based on your criteria.
3. Define the action to perform and any optional parameters.
4. Submit the list and action to S3 Batch Operations.
5. Monitor the operation, receive notifications, and access reports upon completion.

Key Point

• Security Use Case: A common scenario is to identify all unencrypted S3 objects using S3 Inventory and then encrypt them in a single operation with S3 Batch.