In most cases, the largest amount of traffic to your site will be comprised of direct and organic traffic. If you have a partnership with an industry association or manufacturer, you may see referral traffic from their website. If you decide to do paid advertising such as pay-per-click marketing, you might see traffic coming in from ad campaigns as well.
As I mentioned earlier, one of the biggest downsides to SEO is that Google is constantly making changes to their algorithm; they come out of nowhere, and they can drop your domain authority by 5, 10, even 15 points and it almost feels like you need to start optimizing all over again. It's frustrating, it's hard work and the results aren't always visible - but if you can get SEO right, it can truly be an amazing source of traffic.
Organic is what people are looking for; the rest of these simply put things in front of people who may or may not be seeking what you offer. We know that approximately X number of people are looking for Y every day. So if we can get on front of those people, we have a much greater opportunity to create long-term relationships and increase our overall ROI.
Looking back at our lab site, we can see that Organic Search is doing well for us. However, if we put a little effort into social media, we’d probably see growth in that sector — and a bigger pie. We’ve got some strong referrals (and high quality links that improve our search presence), but if we put some work into building more of those links, we’d probably see more referral traffic and, again, a bigger pie. Should we add paid search? For this site, no. It’s part of our community service and has little revenue potential, so we wouldn’t see much ROI from ads.
Visual assets aren’t regular images you might pull from a Google Image search. Instead, these are unique diagrams or infographics you’ve created specifically for your epic content. These kinds of diagrams or infographics explain a theory, communicate a point, or showcase data in exciting and interesting ways—and gain attention (and links) because of it.