SEO is a Quick Process or Method to high visibility of a website or a webpage on the top listed Search Engine Result Pages (SERPs) within a very short time without any paid Service. some time it is called Organic or Natural SEO. SEO ensure ROI (Reture on Investment) and a very cost effictive process.
Without SEO it's empossible to get high page rank and visibility on top listed search engine. few major points is describe in details as below: