Short for Search Engine Marketing, SEM is often used to describe acts associated with researching, submitting and positioning a Web site within search engines to achieve maximum exposure of your Web site. SEM includes things such as search engine optimization, paid listings and other search-engine related services and functions that will increase exposure and traffic to your Web site.

 

A marketing system on the Web in which the advertiser pays when the user clicks on its advertisement and goes to its site. This is a more interactive, results-oriented method compared to paying for just the placement of a banner ad on a Web page regardless if anyone clicks on it.