Even in the basic free version, you get information about how your customer finds your site and how they interact with your website, which pages they visit, and how they move around on your site. This information is vital to understand how your clients use your site so that you can give them more of what they want. Access to this information can make any business a success, and you get all from Google Analytics.
GA will give the routes that clients take to get to your site, what content they view, and what they use to get there as in the devices they use to access your platforms. With customizable dashboards to measure the sales and conversion rates, you will simply not know more about your site with any other analytics software.