If you plan to migrate data to Amazon S3, install the Storage Import Module before beginning.
When setting up your Amazon S3 account(s) using the Credential Editor, makes sure the AWS Region matches your Amazon S3 account.
You’ll use the Storage Import and Storage Provider target when configuring the workflow policy, mapping wizard, etc.
While setting up the migration, use the Storage Import Module tab of the System Configuration page to, for example, set item/archive parallelism, set up conversion of MSG to EML, fail items permanently on specified errors, etc.
This is how the migrated archive and messages look on the storage provider (Amazon S3):