An AdWords script is a customizable and automated tool used to manage and optimize Google AdWords campaigns. It allows advertisers to write and run code that can perform various tasks, such as adjusting bids, pausing underperforming ads, and generating reports. AdWords scripts provide a more efficient and effective way to manage large and complex campaigns, saving advertisers time and effort. With the ability to schedule and run scripts on a regular basis, advertisers can continuously improve their AdWords performance and achieve their advertising goals.