Search engine advertising is an advertisement unit with ads that appear in the first 3-4 positions at the top and bottom of search results pages in response to a user's query. It targets the 'hot' audience that is ready to buy a product or service, as it uses real user search queries for targeting.
Among the features we can highlight is that you can either pay per site link or upon reaching a goal, such as making a sale.
Advertising is aimed at the "hottest" audience 
More flexibility in the choice of payment for achieving results 
Complete control of the campaign 
