Google Ad Extensions are the add ons in Google AdWords which help in expanding the ads with additional information. This gives people more chances to choose the ad providers’ business or organization. Google Ad Extensions work in increasing the ad's click-through rate by a significant percentage. They can include any of the things such as the call buttons, location information, links to specific parts of the website, additional text information, location extensions, social annotations, seller ratings, mobile app extensions, offer ads, communication ad, review extension, Image and drop-down navigation ad extension and much more.

BY Best Interview Question ON 11 Oct 2019