Pre roll ads are short, usually 15-30 second commercials that appear before a video is played. These ads are becoming increasingly popular for marketers who need to get their message out quickly and efficiently. Pre roll ads provide a great opportunity for businesses to reach their target audience in an effective manner. They can be used to promote products and services, or even just to increase brand awareness. Pre roll ads have become an important part of the digital marketing landscape and they are here to stay.