SEO is the process of getting your site traffic and thus helps in improving the visibility of your site on search engines and thus enhancing your popularity.
SEO is basically telling/informing search engines like google yahoo and bing about your website/page. there is plenty of content available on the net. One such source which helps me is Goo2o knowledgebase. hope you find it usefull .
Reply in case you need more details.
SEO primarily increases the visibility of a website in search rankings.
Apart from that,
-SEO targets audience locally as well as globally
-Pulls organic traffic
-Provides maximum exposure to website
-Makes your site accessible to users
-Faster loading pages
SEO is basically promotional activity by which we can promote our business over the network. Using this activity traffic over our website is increased.