SEM

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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 through optimization and advertising. SEM may use search engine optimization (SEO), that adjusts or rewrites website content to achieve a higher ranking in search engine results pages or use pay per click listings (Source WikiPedia)

Merriam-Webster Online Dictionary
SEM (abbreviation)
scanning electron microscope; scanning electron microscopy
sem (abbreviation)
seminar
SEM (Wikipedia)

SEM can refer to:

About David Rashty

David Rashty, an entrepreneur and one of the early web pioneers, has over twenty years’ experience as a CTO and a CEO. He has been involved in several start-ups and established companies and was the founder of two successful ventures.David is currently using his proven leadership and management skills to act as a Part Time CTO or "JumpStart" CTO for several early-stage ventures; this includes helping them design and develop their product and IT infrastructure.David holds a BS in computer science and an M.Sc in educational technology. He has been a adjunct university professor, given numerous workshops, written several books and articles on information technology and received numerous innovation awards.