SEO stands for search engine optimization, which is the process of affecting the visibility of a website or a web page within a search engine’s “natural” or un-paid (organic) search results. All major search engines such as Google, Yahoo!, and Bing have such results, where web pages and other content are shown and ranked based on what the search engine considers most relevant to users. Optimizing your site ensures pages on your site rank higher for web users looking for specificially targeted search terms.