We are using the cookie in our website to collect some basic information of the visitor. We are using some tool like google analytics which may also be using cookie. In future, we may use some other tools or technologies which use the cookie and store data in your browser to help us to show the better result.
Google Analytics is the web tool which is used for web analysis. We are using it to know the visitor behavior on our website. Which is help us to know about users interest. It is also collecting some basic information of the visitor like IP address, browser etc. You can check here Google Analytics Terms of Service.