Display ads are a type of online advertising that visually showcase a brand or product on various online platforms. They are usually images, videos, or gifs shown to users on websites or apps. Display ads can be interactive, clickable, and can appear in various formats such as square, landscape, or skyscraper. The main purpose of display advertising is to support brand awareness and increase the purchase intention of consumers. Display ads can also be used for retargeting campaigns, where ads are served to users who have already visited a specific website. Display advertising is an effective way to reach a wide audience quickly and generate interest in products and services. It is also cost-effective and allows brands to test different copy, visuals, and calls to action to achieve the desired results. However, it is essential to consider potential challenges such as ad fatigue and the risk of ads appearing on irrelevant or low-quality websites.