SEO or Search engine optimization is a form of unpaid marketing which helps you to increase your website traffic and give you as many viewers as possible. SEO marketing is done by using certain keywords which are related to your website. Subtle use of those keywords will then increase visitors on your website and you can turn them into your customers. Basically, SEO is a process of increasing the quality and quantity of website, increasing visibility of a website or a web page through users of a web search engine. It targets different kinds of search, including image search, video search, academic search, news search, and industry-specific vertical search engines. Optimizing a website may involve editing its content, adding content, modifying HTML, and associated coding to both increase its relevance to specific keywords and to remove barriers to the indexing activities of search engine.