Search engine optimization is the process of optimizing your website to increase your search engine rankings and receive more organic (non-paid) traffic.
SEO began in the 1990s with the advent of search engines. It's an integral part of marketing strategies and growing industry.
Related content: Best SEO guide for Google-friendly site
Search engine optimization does not include PPC and focuses solely on organic search results. Search Engine Marketing can include both SEO and PPC.
