Search Engine Optimization (SEO) refers to the page rank of a particular website. Internet users use the search engines, like Google, Bing and Yahoo to find the information that they are looking for. So its close to worthless to own a site and not do seo and get higher online visibility for the site. SEO Company in Dwarka How search engines work, what people search, actual searches, keywords, which search engines are used are some of the factors that are considered by SEOs. Optimization of a site, includes creating site maps, back links, pings etc. Many other factors also play a key part in seo, which include Content writing, regularity etc.