Search engine are one of the most important source to gets traffic for your website. About 80% of all traffic on internet goes through search engine and most of them goes through google. From search engine someone is going to find your site, so you must do some effort to make your website has good result and appear in strategic position like in page one of search result. If you have the knowledge and information you can do search engine optimization by yourself. But you can choose to outsource it to a good SEO (Search Engine Optimization) company or consultant.
There are many companies that offer to help you boost your search engine result and get traffic, but it’s rare to find a good company that offer performance based SEO. What is performance Based SEO anyway.