In the cloud, not all hard drives are created equal. You choose storage based on Speed, Sharing, or Scale.
The Hard Drive.
Fastest. Attached to ONE server at a time. The Operating System (OS) lives here. If you format it, it breaks.
The Network Share.
Like a shared folder at the office. Many servers can read/write at the same time. Good for collaboration.
The Infinite Bucket.
Stores files as "Objects" with metadata. Accessible via HTTP URL. Infinitely scalable and very cheap.
Mission: You are the Data Architect. Drag the incoming files to the most efficient storage bin.