Alexander G.

Google AdWords is Google's main advertising product and main source of revenue. wikipedia.org

Analytics is the discovery and communication of meaningful patterns in data. Especially valuable in areas rich with recorded information, analytics relies on the simultaneous application of statistics, computer programming and operations research to quantify performance. wikipedia.org

A content management system (CMS) is a computer program that allows publishing, editing and modifying content as well as maintenance from a central interface. wikipedia.org

Google Analytics (GA) is a free service offered by Google that generates detailed statistics about the visitors to a website. wikipedia.org

"Google Tag Manager makes it easy for marketers to add and update website tags, including analytics, remarketing, and more, with just a few clicks." wikipedia.org