I think the main thing with any advertising format is finding a balance between visibility and user experience. Traditional banners are easy to ignore, while notifications can sometimes feel intrusive if they appear too often. That's why in page ad formats are interesting to explore. They can appear directly within the website without requiring visitors to subscribe to browser notifications. Still, I wouldn't judge a format by click-through rates alone. It's worth checking how visitors interact with the website afterward, whether they stay or leave immediately, and how performance differs between desktop and mobile traffic. Frequency control matters too.