Organic social media is anything that happens on social media without paid promotion. When you post as your page but don’t put any money behind this post to “boost” it, you are creating an organic post. If you comment on a business’s post in your news feed, and the “Sponsored” tag does not appear on the post, that action qualifies as organic. In other words, organic actions occur on non-ads.
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.