Smart App Banners are a feature used on websites to promote mobile applications. When a user visits a website on a mobile device, the banner appears at the top of the screen, encouraging them to download or open the app. This helps improve user engagement and provides a seamless experience between the website and the app. These banners are designed to be non-intrusive and can be easily dismissed by users. They can be customized to match the website's design and can include a direct link to the App Store or Google Play. This makes it easier for users to access the app without navigating away from the site.