Search Engine Marketing cover PPC which is a Pay Per Click Advertising programme run by Google.
Search Engine Marketing (commonly known as SEM) focuses on the advertising aspects of Google’s search engine in the shape of Adverts running to display when keywords are typed into Google.
The main feature of the programme is that the Adwords customer is only charged the advertising fee when the visitor clicks on their advert. So it is important to have a destination landing page that is relevant to the original keyword the user typed in and the Advert.
Merge Media can help you with this optimisation process.