Search engine optimization is necessary to generate the traffic on your website from different location of the world. No user knows about your website when he surfs the internet. There are lots of service providers available in the market, so it is not necessary that everyone know about your website. As per normal tendency a normal user when required to avail any particular service, then he search for the best service provider or seller of a product on internet. He checks for the rating of that service provider and review feed back from existing customers of them.