SEO or search engine optimization is the process of generating marketing results for a company or website through various forms of paid and non paid advertising. While the actual marketing content takes a variety of shapes, ranging from blogs and how-to guides to infographics, videos, product pages, and anything else that may be relevant to a company, SEO focuses on improving the ranking of this material in organic search results. SEO also involves using analytics software to determine which advertising techniques are most successful. Once a company has this information, it can start producing more content of that type, with the ultimate goal of improving its advertisements over time.