Search Engine Optimization (SEO) (also called “natural referencing”) defines the set of techniques implemented to improve the position of a website on the results pages of search engines

An SEO expert aims to improve the visibility of the websites he supports by making them gain positions on search engines (Google, Bing, etc.). The goal is to make Internet users, who are interested in products and services or informative content, meet each other.

It is said that a site is well optimized or referenced if it is in the first positions of a search engine on the desired queries.