The abbreviation SEM hides the term search engine marketing, in German search engine marketing. The goal of SEM is to increase the visibility of a company in search engine results and thus increase the number of users. The more present a website is listed in the results of a search engine, the higher the traffic of the respective website.
In addition to designed ads in the results area of search engines, also called SEA or Search Engine Advertising, SEO is also one of the tools of Search Engine Marketing. While SEA focuses on increasing the reach of paid advertisements, SEO, the Search Engine Optimization, aims for the highest possible organic ranking of search results.