Search Engine Optimization (SEO) is the process of improving internal and external aspects of a website, or Web page, to increase its organic visibility for search engines.
SEO involves editing the website’s HTML code and content to make it more search engine friendly, and then promoting the site to increase its relevance on the Web.Once search engines are alerted to your website’s presence, they scan the code and content of your site and index the information. Search engines analyze the website content to determine when and where your website displays on a search-engine result page.
The page content (text displaying on a Web page) should be inviting, comprehensive, and — within reasonable limits — contain as many of the site’s keywords as possible.
Some search engines, including Google®, pay particular attention to the number of websites linking to your website when determining the importance and ranking of your site. These external links are called back links.