Dynamic creative optimization (DCO) is a technique and strategy used in digital advertising that aims to optimize ad content and visual elements in real-time.

In this method, ad content and visuals can be dynamically adjusted based on various variables such as users' demographic information, behaviors, geographic locations, or other data points. For instance, the ad content can be automatically changed according to the product categories a visitor clicked on or the products they browsed on an e-commerce site. This allows for the delivery of more relevant ads to users' interests, thereby increasing conversion rates.

With technological advancements, the use and effectiveness of DCO continue to grow, providing advertisers with the ability to offer personalized ad experiences that were previously impossible.