Prominence is also based on information that Google has about a business from across the web (like links, articles, and directories). Google review count and score are factored into local search ranking: more reviews and positive ratings will probably improve a business's local ranking. Your position in web results is also a factor, so SEO best practices also apply to local search optimization.
It appears that the reason this page from a little-known website is able to rank amongst the bigger players is that the content itself is more focussed. It talks about how to name images for SEO, whereas most of the other pages are more general guides to image SEO—which all presumably mention the importance of naming images correctly, amongst other things.
Dear Brian, thank you for this clear and helpful tutorial. A question: if I want to rank a YouTube video specifically on Google… should I focus only on engagement (retention views, comments, social media shares, ecc.) or should I add also classic backlinks (anchor text to the video url, from other sites)? I still don’t understand If the last ones are almost useless or actually useful.

Thanks for the post. I found you through a G search for how to rank a YouTube video. I honestly think with the recent G update, they are trying to force their adwords and YT and everything else they own to the user. So I think that the new “niche site” is going to be YT videos. I lost a ton of rankings to my niche site over the weekend. My entire website went from average 800 UV a day to 10… Really made my heart sink. Just as I was starting to do well with SEO ha ha.
1) Youtube Keyword Research - When you're creating a Youtube video you must create the video with a purpose. Randomly making a Youtube video without doing any keyword research will NOT rank your video on the first page of youtube in 24 hours or less. Follow what I teach you in this video and if you would like to leverage the tool that helps you do keyword research for all your youtube videos then i've left the link above.

One of my favorite ways to give content a boost is to run ads on Facebook targeting people with interests that are relevant to the content. It’s fairly low cost since you are offering a free piece of content. By targeting people with relevant interests to your content, you drive the right people to the content and into the top of your funnel. And if your content resonates with them, they’ll share, link, and engage with the content in ways that will help Google see its value.