Search Engine Optimization, or SEO, is the process of improving the volume or quality of traffic to a web site from search engines via "natural" ("organic" or "algorithmic") search results. Typically, the earlier a site appears in the search results list, the more visitors it will receive from the search engine. SEO may target different types of search, including image search, local search, and industry-specific vertical search engines. This gives a web site optimum web presence. Because effective SEO may require changes to the HTML source code of a site, SEO tactics may be incorporated into web site development and design. The term "search engine friendly" may be used to describe web site designs, menus, content management systems, images, videos, shopping carts and other elements that have been optimized for the purpose of search engine exposure.
