SEO stands for Search Engine Optimization. SEO includes any kind of measures to optimize the visibility of your website in search engines. The goal is that your pages have the best possible ranking for a certain keyword, i.e. appear as high as possible in the search results. Because: The higher your page appears, the more visitors you will (presumably) have.
SEO is an extremely broad field and also means a lot of work. On my blog you will find some posts and tutorials on how to do SEO and get many helpful tips!
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