Google Analytics..
Google Analytics
Google Analytics is a free Web analytics service that provides statistics and basic analytical tools for search engine optimization (SEO) and marketing purposes. The service is available to anyone with a Google account.
Google Analytics uses a small piece of JavaScript tracking code to collect data about your website visitors and their interactions on your website. … Once it’s setup,Google Analytics will drop a cookie in the user’s browser for your website. It will help to track every interaction that user performs on your site