The engines are those that perform an exhaustive search of what the user requires. An intricate website is set to move at the time the user enters a phrase or specific words. Identifying these words is usually an advantage. The bots perform tracking according to these data. Years ago, SEO was based on the use of specific words that helped the position. Today is a more complex process. This is because not only the words are taken into account, but the images, the links, the type of content, the date of publication. It also gives great relevance to the originality of the content and the formats used. All this system is achieved thanks to the algorithms and with a vertiginous speed.