Google Analytics (abbreviated GA) is a free service offered by Google that generates detailed statistics about the visitors to a website. GA can track visitors from all referrers, including search engines, display advertising, pay-per-click networks, email marketing and digital collateral such as links within PDF documents. GA uses a small snippet of Javascript code on each page of a website to deliver data back to Google for processing and delivery to the client within approximately one hour. It must be installed by the client on their website.
