I noticed that some results of searching on Google are not a single url but a single url with a two-column list of what I call 'important links' of this website.
For example: If you open Google and search for "amazon.it", without the double quote, you got this:
As you can see, some links are evidenced directly on SERP ("eBook Kindle", for example).
I know I can produce a sitemap.xml for Google bot pleasure, but, my question is: How can I evidence some particular link of my website to be presented in this way in Google's SERP?.
As far I know, there is no a special syntax in the sitemap protocol to 'force' or 'suggest' this to search engines. For future readers: this is the link to the sitemap protocol.
These are called sitelinks and they are unrelated to sitemaps. Google only shows them when:
Some say implementing breadcrumbs helps Google find SiteLinks candidates, but this has never been confirmed and may be completely false.