Cross account replication of aws s3 Bucket and its data into another

Hi,

Setting up replication when source and destination buckets are owned by different AWS accounts is similar to setting replication when both buckets are owned by the same account. The only difference is that the destination bucket owner must grant the source bucket owner permission to replicate objects by adding a bucket policy.

Reference: https://docs.aws.amazon.com/AmazonS3/latest/userguide/replication-walkthrough-2.html