The word SEO stands for the search engine optimization. Well the search engine means the different search browsers and the its function is the engine with the optimization. So long the meaning of the seo has been getting the different ways of its uses. As an Internet marketing strategy, SEO considers how search engines work, what people search for, the actual search terms or keywords typed into search engines and which search engines are preferred by their targeted audience. Optimizing a website may involve 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. Promoting a site to increase the number of backlinks, or inbound links, is another SEO tactic. see here