Without search engines, the internet would be a huge pile of data, in which it wouldn't be possible to find any information. After the user submits a query into the mask of the respective search engine, the machine shows a few seconds later a list of its found results, based on the keywords of the query. The results will be listed by the calculation principles of the search engine for the relevance of a website. The higher the relevance of a website, specifically, the higher will the results be listed. The ranking of a website is its most valuable intangible asset. This is why big companies need SEOs. They want to appear on the top of the results pages.