Search Engine Optimization (SEO) can be defined as a process or an activity where your website pages are optimized in such a way that they start getting good ranks on various search engines like Google, Yahoo, Bing, Rediff and others. All WebPages should be 'optimized'. This will enable your site to gain a high search engine ranking, it revolves around the meta tags, keywords, description, site coding, site updates, back links and such other important things. A web page that isn't optimized won't appear in the search engines to any great degree. Click to get more information on Search Engine Optimization.