EFS Replication across accounts

Hi, @Maan

You have several options.

First, the EFS backup function and native replication function do not support cross-account.

If your multiple AWS accounts are in the same AWS Organizaitons, you can use the AWS Backup cross-account feature.
https://docs.aws.amazon.com/aws-backup/latest/devguide/manage-cross-account.html#enable-cross-account

If you're in another organization, you can use the AWS DataSync cross-account Transfer feature.
https://docs.aws.amazon.com/efs/latest/ug/trnsfr-data-using-datasync.html