SEO is a combination of activities that help search engines find and trust you, organize the information you're publishing, and present it to users searching for it. SEO is about quality backlinks and optimising on-page content which leads to a better ranking on sites like Google. Organic search is most important as it is the primary source of website traffic. On-Page SEO ( Search Engine Optimization) refers to services like page titles, internal linking, meta tags & descriptions, etc and Off-Page SEO refers to services like social networking, article submission, forum & blog marketing, etc. This, in turn, increases the rank and visibility of the websites.