Display Ads are comes in many different forms and sizes. Most of the display ads we design will be responsive by default. So that Google can resize it and serve seamlessly within any piece of content, video or app on the internet. There are also animated ads that can attract more attention from users. The next thing is mobile optimized ads, also known as AMPHTML ads. These ads are faster, lighter, and more secure. AMPHTML ads are a more efficient and secure way to advertise on the web.