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.