It is a free performance analysis tool that provides detailed information about visitors to a website. Webmasters can use this tool by placing the Google Analytics tracking code in the root index of their website after the registration process. Google Analytics analyzes user behavior on a website and passes the results to webmasters. This way, webmasters can easily get a lot of useful information, such as how many visitors are visiting their website, their demographic profile, which pages users tend to visit more, what device they log in from, etc. Using this information that brings them greater familiarity with their user profile, they can make tweaks to their websites and campaigns or create new strategies.