Every month, auctions are conducted billions of times, resulting in advertising related to what visitors are looking for. The search engine conducts the auction that sets the ad locations and each advertiser's CPC once it has processed the request. Other operations include the following:   The AdWords system locates all adverts whose keywords correspond to a search when a user searches.  The algorithm ignores any ads that aren't eligible, such as those that are offensive or target a different nation.  Only the ads with a high enough Ad Rank may display from the remaining advertising. Your bid, ad quality, and the predicted influence of extensions and other ad formats determine Ad Rank.