Google programmatic advertising is the use of software to automate the buying and placement of online ads. This technology has been used for years to increase efficiency and effectiveness in the media buying process, and more recently, it has been used to purchase and place ads on behalf of advertisers. Programmatic advertising on Google can take many different forms, but the most common is real-time bidding (RTB). In RTB auctions, advertisers compete against each other to have their ad placed on a publisher’s site or app. The auction is based on factors such as the advertiser’s bid, the quality of the ad, and the relevance of the ad to the publisher’s site or app. Google is one of the largest programmatic advertising platforms, and its programmatic ad business is growing rapidly. In 2018, Google’s programmatic ad revenue was $32.6 billion, and it is expected to grow to $45.8 billion by 2020.