For SEM we mean Search Engine Marketing and that is all the activities for the promotion of a site on search engines. The SEM, unlike the SEO tends to increase the number of visitors, through the quality of published content and user profiling and retention in order to increase ROI, return on investment.
The main activities of the SEM can be summarized as follows:
– press release publication;
– pay per click and keyword advertising;
– link building;
– promotion through social networks.
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