Web analytics is the cornerstone of Digital/Online Marketing. It is what gives the internet an edge over other marketing channels like TV, Radio and Newspaper.
Web analytics is essentially the measurement, collection, analysis and reporting of internet data for purposes of understanding and optimizing web usage.
Definition from www.surveyanalytics.com
Below is a short video showing real time web analytics data from Google Analytics. It shows the number of pageviews per minute and second. It shows the pages that people are currently viewing. It also shows how many people are currently on the website.