Amazon S3 is launching S3 Object Ownership as a follow-on to two other S3 security & access control features that we launched earlier this month. All three features are designed to give you even more control and flexibility. You can now ensure that newly created objects within a bucket have the same owner as the bucket. S3 already allows multiple AWS accounts to upload objects to the same bucket, with each account retaining ownership and control over the objects. This many-to-one upload model can be handy when using a bucket as a data lake or another type of data repository.”]
Source: https://aws.amazon.com/blogs/aws/amazon-s3-update-three-new-security-access-control-features/