Find out more about outsourcing SEO and link building at: http://www.freelancerselite.com/how-to-outsource-your-seo-and-link-building/ Search engine optimization, SEO, is a marketing technique used by businesses to either, 1. encourage a greater number of 'hits', or, 2. to filter through relevant internet traffic, for example, potential customers. Search engines operate by examining websites to find the most relevant pages. By optimizing a website with generous references to keywords, a business will be able to ensure its website appears further up search engine lists. This generates a greater volume of traffic leading to more sales and advertising revenues.