SEO, or Search Engine Optimization, is a set of strategies and practices aimed at improving a website’s visibility and ranking in search engine results pages (SERPs). The primary goal of SEO is to increase the organic (non-paid) traffic a website receives from search engines like Google, Bing, or Yahoo. It involves optimizing various aspects of a website and its online presence to make it more appealing to search engines and, consequently, to users.t is a set of strategies and techniques used to improve the visibility and ranking of a website in search engine results pages (SERPs). The primary goal of SEO is to increase organic (non-paid) traffic to a website by making it more relevant and authoritative in the eyes of search engines like Google, Bing, and Yahoo.