Snowball is a petabyte-scale data transport solution that uses secure appliances to transfer large amounts of data into and out of the AWS cloud.
Amazon EFS is an implementation of the Network File System (NFSv4) delivered as a service. File systems can be created and mounted on multiple Linux instances at the same time. Use EFS when you need a “file system” that can be accessed from multiple instances (e.g., shared media, home folders, documentation, shared logs).
Simple Storage Service (S3) is a global object storage platform that can be used to store objects in the form of text files, photos, audio, movies, large binaries, or other object types.
Elastic Block Store (EBS) is a storage service that creates and manages volumes based on four underlying storage types. Volumes are persistent, can be attached and removed from EC2 instances, and are replicated within a single AZ.