How do Google "Site Links" work?

As most of us do, we search for things in Google... some results show expanding related links from a site referenced. These are called "Site Links".

So as a business owner or web developer, you may wonder, how can you set this and control it?

Well, there is good news and bad news... The bad news is that it's automated by Google. "We only show sitelinks for results when we think they'll be useful to the user." "G" does suggest if your site structure is good, you will see these site links when relevant.

The good news is that you can remove (demote) links you don't want to show.

Google does say they are working on this tool - so maybe in future there will be more you can do with Site Links.  Read more about it here: Google Site Links.