- Decrease CTR rates as users are sent to specific pages of your site
- Show your business address, phone number, and a map marker with your ad text
- Allow targeted remarketing list users to land directly on specific pages of your site
- Allow advertisers to give users the option to land directly on specific pages of your site
Sitelinks can take people to specific pages on your site—your store hours, a specific product, or more. When someone clicks or taps on your links, they skip right to what they want to know or buy.
Read more here: https://support.google.com/adwords/answer/2375416?hl=en