The document discusses how to use ad customizers in Google Ads. It provides an overview of ad customizers and how they can be used to make ads more dynamic by pulling in real-time business data. The document outlines several everyday uses of customizers like counting down to events, showing a user's location, and listing the number of customers. It also discusses some advanced examples like showing available product shipping dates or inventory levels based on a user's location or how inventory changes. Finally, it provides reminders on customizer limits and best practices.