Bandwidth is defined as a range within a band of frequencies or wavelengths. Bandwidth is also defined as the amount of data that can be transmitted in a fixed amount of time. For digital devices, the bandwidth is usually expressed in bits per second(bps) or bytes per second.

Bandwidth express as bits per second or amount of data that can be transmitted in fix amount of time.

It is generally used to a data transfer rate of the network communication in bit per second that defined with how to data transfer could be fast over a wired or wireless connection.

Bandwidth is the volume of data that is transmitted from the website over the internet. Putting it in different words bandwidth is the transfer of data or web traffic that is permitted to take place amid the website and the rest of the internet. Thus it advisable for a webmaster to have an approximate estimate of how much bandwidth would be required by the website and select web hosting providers that offer higher bandwidth.