Search engine optimization (SEO) is the process of improving the
volume or quality of traffic to a web site from search engines via
"natural" or un-paid ("organic" or "algorithmic") search results as
opposed to search engine marketing (SEM) which deals with paid
inclusion. Typically, the earlier (or higher) a site appears in the
search results list, the more visitors it will receive from the search
engine. SEO may target different kinds of search, including image
search, local search, video search and industry-specific vertical search
engines. This gives a web site web presence.
As an Internet marketing strategy, SEO considers how search
engines work and what people search for. Optimizing a website primarily
involves editing its content and HTML and associated coding to both
increase its relevance to specific keywords and to remove barriers to
the indexing activities of search engines.