With internet transforming into a business backbone, companies large and small are taking all initiatives to harness the marketing potential of the information technologies. Major search engines like Google, Yahoo, Bing, Alta Vista, etc. crawl the webspace regularly and index the information, so as to deliver it when a search is made by the customer. Most of the search engines use a proprietary algorithm, consisting of lots of variables, to rank the pages. A High Search Engine Page Ranking for a business website can boost the marketing potential by getting found in organic searches. The core objective of SEO is to make the site / page relevant and user-friendly. SEO is very instrumental in online marketing.