Which solution will meet this requirement with the LEAST operational effort?
Create a second S3 bucket in us-east-1. Use S3 Cross-Region Replication to copy photos from the existing S3 bucket to the second S3 bucket.
Create a cross-origin resource sharing (CORS) configuration of the existing S3 bucket. Specify us-east-1 in the CORS rule’s AllowedOrigin element.
Create a second S3 bucket in us-east-1 across multiple Availability Zones. Create an S3 Lifecycle rule to save photos into the second S3 bucket.
Create a second S3 bucket in us-east-1. Configure S3 event notifications on object creation and update events to invoke an AWS Lambda function to copy photos from the existing S3 bucket to the second S3 bucket.
Explanations:
S3 Cross-Region Replication automatically replicates objects from one bucket to another in a different region, requiring minimal operational effort after initial setup. This solution meets the requirement of storing copies of new photos in us-east-1 efficiently and without ongoing management.
CORS configuration is not related to replication or copying objects across regions. It only manages how resources are shared between different origins in web applications and does not provide any functionality for storing copies of photos in another S3 bucket.
While creating a second bucket with an S3 Lifecycle rule is possible, Lifecycle rules are typically used to transition or expire objects, not for copying them to another bucket. This option involves more operational effort and does not directly address the requirement for ongoing replication.
Using S3 event notifications and a Lambda function to copy photos is a viable approach, but it involves more operational effort compared to Cross-Region Replication. This setup requires managing the Lambda function and ensuring it runs successfully for each new photo, which adds complexity and maintenance overhead.
If I’m not mistaken, the answer is:
Create a second S3 bucket in us-east-1. Use S3 Cross-Region Replication to copy photos from the existing S3 bucket to the second S3 bucket.