Ad Extensions

Ad extensions are additional pieces of information about your business, like a phone number or a link to a specific page on your website, you can add to your ads. Ad extensions are free to add to your ads, with the usual charges for any clicks you get.

“Extensions give you additional real estate with your ad and best of all… it is free (at least pre-click)!” – Diane Anselmo

https://www.ppchero.com/how-to-measure-sitelink-extensions-performance/