Bandwidth

Bandwidth is a term you’ll hear a lot with web hosting. Some web hosts will also refer to it as data transfer, although data transfer is not the same as bandwidth – and these two terms are commonly confused with each other.
In the web hosting world, bandwidth is commonly used to refer to total data transfer. Bandwidth is the amount of data that can be transferred at a time (which can impact the speed of data transfer).
Every time someone views your website, data is transferred from your server to the visitor’s computer or mobile device. Larger files, like pictures or videos, tend to take more bandwidth than text.