Google AdWords is an online advertising platform that allows advertisers to run ads on Google, YouTube, search partners and display networks. It uses a pay-per-click model where advertisers only pay when someone clicks on their ad. Advertisers can target ads based on keywords. The document provides guidance on setting up an AdWords campaign, including choosing keywords, writing ads, setting budgets and bids, and tracking conversions. It emphasizes doing keyword research, using negative keywords, optimizing match types, and testing ads to improve performance.