Search engine optimization (SEO) is the process of improving the volume and quality of traffic to your website from search engines via “natural” (“organic” or “algorithmic”) search results.  Usually, the earlier a site is presented in the search results, or the higher it “ranks,” the more prospective customers, clients, or patients will visit your site.  SEO can also target different kinds of search, including image search, local search, and industry-specific vertical search engines.