SEO Vs. SEM: Understanding the Trick Distinctions SEO, which stands for Browse Engine Optimization, concentrates on improving a web site's presence and organic ranking on search engine results web pages. On the other hand, SEM, or Browse Engine Marketing, includes paid advertising and marketing to increase a site's visibility on https://averageretainerforseoserv18383.webbuzzfeed.com/24155353/specialized-competence-the-important-function-of-seo-specialists-in-digital-success