It’s pretty simple to understand where a file goes when you save it on your PC. It lives on your hard drive, possibly housed in a set of folders you’ve created and organized yourself. That file is only stored on your computer, unless you decide to email it to yourself or save it on an external hard drive or USB.
Now what about the cloud?
At its most basic level, “the cloud” is just fancy-talk for a network of connected servers (a server is simply a computer that provides data or services to other computers). When you save files to the cloud, they can be accessed from a computer connected to that cloud’s network. Now take that idea and multiply it to understand how the cloud works for you. The cloud is not just a few servers, but a network of many servers typically stored in a spaceship-sized warehouse—or several hundred spaceship-sized warehouses. These warehouses are guarded and managed by companies such as Google (Google Docs), Apple (iCloud), or Dropbox.