When a person searches for a subject and then chooses to click on a particular website in that list, the traffic that is created by the user visiting the site would be considered to be organic. Search engine optimization is used to increase organic traffic. Content will be written with particular words embedded in the text that people normally search for when searching a particular subject. Then in the future when a person searches for that the website will be included in that search. Although the website targeted users through the SEO content it is still considered organic.