Google AdWords is Google's pay-per-click online advertising program that allows businesses to promote their products and services. There are different types of AdWords campaigns including Search Network ads that appear on Google search results pages, Display Network ads that appear on partner websites and apps, Shopping ads that provide product details, and Video ads. Advertisers create AdWords accounts to manage campaigns, ad groups containing ads and keywords, and control budgets. Ad auctions determine ad placement based on an ad's rank calculated from the bid and quality score. (151 words)