DataSync allows for you to sync data on-prem into S3, EFS, or FSx or from one AWS storage solution to another. The key takeaway being you have the ability to preserve file permissions and metadata for example in SMB and NFS. This replication is not continuous and occurs and schedule times, hourly, daily, etc. An DataSync agent is needed on premises or on an alternate cloud if you’re moving data from on-prem to AWS or from a different cloud to AWS. Data moving within AWS does not require an agent. If you don’t have the bandwidth to upload this the AWS snow cone device I mentioned in my previous snow family post has DataSync preinstalled. In short DataSync allows you to move large sets of data to and across AWS while preserving the metadata and permissions.