In thinking of a mobile first world, Google has rolled out new site links to the search results on mobile search.
Historically, Google would award "site links" to a domain, or the designation of 4-6 links to important interior pages of the site. This links would display under the main domain, and give a website more of the real estate in the organic search results.
The new carousel format for site links has been confirmed this week with Google. Site links are now found in a single carousel format. Instead of scrolling down for links, the user can scroll left or right to access all of the site links.