SEO is the “search engine optimization”. It is mainly to improve the quality of traffic from search engine to the web site. The SEO offers different kind of searches like image, industry- specific search engines and also local searches. The main target of SEO is to consider what kind of searches that the people require. The other reference of SEO is the “search engine optimizers”. The optimizers in the above reference refer to the consultant of the industry who performs the project. The employees also perform the services in house on the behalf of their clients. The main requirement of SEO is the HTML source code. The HTML helps to develop and design the website. The SEO industry offers the SEO conferences, seminars and also chats. The main aim of the search engine is to provide guidelines in optimization of web sites. Yahoo, Google and Microsoft are the leading search engines available. The SEO consist of both the good designed and also non approved parts. This shortly said as white hat and black hat. The searches have good design which is said by the white hat and the non approved part as the black hat. The black hat consists of sites that are banned. SEO will suffer a major loss if number of visitors to the search engine decreases. Search engine optimisation is mainly for the design of web pages.