Web Traffic is simply a term to denote any activity generated by users interacting with applications on the internet. This can be in the form of messaging, visiting a website, watching a video, etc. All of these activities constitute what is known as web traffic. It is also a common statistic for ranking how popular a particular website or internet product is. The higher the web traffic the more popular it is. Various providers offer ways to analyze web traffic such as Google Analytics or MixPanel. These vendors help determine where the web traffic is coming from so that a business can understand their users better.
in other words
A way to measure how popular your site is.