The best model to use will depend on a number of factors, including user experience, engagement, ad relevance, and revenue potential. Each model has pros and cons of its own. Small advertisements that appeplay slots casinoar at the top or bottom of an app's interface are called banner ads, and they are frequently used to produce passive ad revenue. Full-screen advertisements known as interstitials run during moments of natural app flow, like game levels or app transitions. In return for watching a video ad, users who watch "rewarded videos" receive in-app rewards. This value exchange increases user engagement and ad revenue.