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Search Engine Marketing (SEM): Search Engine Marketing (SEM) is a kind of internet marketing that promotes websites by boosting its visibility in SERPs using paid advertising.https://my.wartburg.edu/ICS/Campus_Life/Campus_Groups/Biology_Department_Advising_Page/Discussion.jnz?portlet=Forums&screen=PostView&screenType=change&id=3c73a5ad-3504-44a0-9d88-2fcb4582b0d3