Data transfer or transfer is any information that is transferred from one location to another through some communication method.
For example, for this page to be visible, all text, images, and other data was transferred over the Internet to your computer. If you wanted to copy a file from the hard drive to a USB drive, it would need to be transferred before it would appear on the USB drive.
How is information transferred on the Internet
Data can be transferred to and from computers over the Internet using one of two methods.
If a user wants to receive, or pull, data from the Internet, they download that data. The data is often downloaded from a NAS or SAN file storage system.
It's also possible for users to upload and download data to and from other computers directly over the Internet. Users can utilize peer-to-peer communication to transfer files directly between computers, bypassing a file storage system.