Links to your site are extremely valuable – When another website links to yours, search engines consider that an indicator that your site contains valuable content. Not so long ago, getting dozens of links from low-quality sites was all it took to boost your ranking. Today, the value of a link to your site depends on the quality of the site that linked to you. Just a few links to your business from high-traffic sites will do wonders for your ranking!
Remember when you used to rely solely on search engines for traffic? Remember when you worked on SEO and lived and died by your placement in Google? Were you #1? Assured success. Well, okay, maybe not assured. Success only came if the keywords were relevant to your site users, but it was the only real roadmap to generating site traffic and revenue.
Finally (sorry)…. Speed!!! I have queried this a few times with Google and expect speed to begin to play a bigger part on things moving forward from the mobile-first index. Last I heard they were even planning to do something around speed for launch (although what launch actually means is anyone’s guess with them rolling sites to mobile-first when they are “ready”).