Search engine optimization (SEO) is the technique of improving the nice and quantity of website traffic to a website or a web page from search engines. SEO targets unpaid visitors (known as "natural" or "organic" results) instead than direct visitors or paid traffic. Unpaid traffic may also originate from unique types of searches, such as photo search, video search, tutorial search, information search, and industry-specific vertical search engines.
As an Internet marketing strategy, SEO considers how search engines work, the computer-programmed algorithms that dictate search engine behavior, what people search for, the real search terms or keywords.