Search Engine Optimization (SEO) is a form of marketing process that’s intended to improve the volume or quality of traffic to a specific Web site (company) or web page (blog) from search engines through either “natural” or un-paid (“organic) search results or search engine marketing (SEM), which deals with paid inclusion. The SEO theory is that the higher, or earlier, a site shows up in the search results list, the more visitors it will get from the search engine. There are a variety of SEO types of search, like, image, local, video and industry-specific vertical search engines.
SEO, another form of Internet marketing, considers how search engines work and what people are searching for. Optimizing a site consists of editing its content and HTML and associated coding to increase its relevance to certain keywords and remove the barriers to the indexing activities of search engines