Ad blocking or ad filtering is a type of software that can remove or alter advertising content from a webpage, website, or a mobile app. Ad blockers are available for a range of computer platforms, including desktop and laptop computers, tablet computers and smartphones. A variety of methods have been used for blocking advertisements.

Ad extensions are additional pieces of information that can be added to Google Adwords ads, including reviews, address, pricing, callouts, app downloads, site links, and click-to-call.

Ad Network – A grouping of websites or digital properties (like apps) where ads can appear. For example, Google has 2 ad networks: the search network (text ads that appear in search results) and the display network (image ads that appear on millions of websites that have partnered with Google).