What is the SEM ?

SEM is a form of microscope that produces pictures of a sample by scanning it with a targeted beam of electrons. The electrons move with atoms within the sample, manufacturing numerous signals that contain info regarding the sample's surface topography and composition.
 
SEM stands for search engine marketing. It is the process of promoting your website in various search engines to build its popularity and reputation. Search engine optimization and social media optimization are two major processes used for search engine marketing.
 
Search engine marketing (SEM) is a form of Internet marketing that involves the promotion of websites by increasing their visibility in search engine results pages (SERPs) primarily through paid advertising.
 
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