Traffic is the term used to describe all types of data communications on a computer or network during a period of time. High traffic times may slow down loading time and cause website congestion. It is important to know how much traffic your website is receiving so that you can adjust accordingly. Web traffic can be monitored using a lot of different techniques. The trick is figuring out which techniques are most helpful and beneficial to you. Traffic is the data that goes through a computer or a computer network. High traffic can cause a network to not properly operate.