Glossary Term: Search Engine Optimization (SEO)
Search engine optimization (SEO) means to optimize the web-site to receive a higher Search Engine Ranking Position. For someone to land on your web-site. You can either spend a lot on advertising, have an interesting site that gets popular from word-of-mouth (like Facebook), or through organic (natural, un-paid) searches from search engines.
Search engine optimization is a process involves optimizing the site title, meta description and keywords, page contents as well as back links from other sites, your domain history and more. A successful search engine optimized web-site will likely rank higher than other competitors and in result receive more "free" traffic.