Amazon S3 ACL for read-only and write-once access

Question

I\'m developing a web application and I currently have the following ACL assigned to the AWS account it uses to access its data:

Answer 1

You can now do this with S3 Object Lock. It's a per-bucket setting, and allows you to place one of two kinds of WORM locks.

• "retention period" - can't be changed
• "legal hold" - can be changed by the bucket owner at any time

https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lock.html