Search engine marketing(SEM) is a process of gaining website traffic buy purchasing ads on search engines. One such example is Google AdWords. Google AdWords is an excellent online advertisement service launched by Google in October 2000, where advertisers pay to display a text snippet of their business. Google AdWords is a system partly based on cookies and partly on keywords determined by the advertisers. Advertisers may set their daily budget and publish their ads. Google AdWords will then start displaying the ads and charge the advertiser per click on their advertisements till their daily budget is exhausted. Google will then stop showing the ad for that particular day and continue to display the next day till the daily budget is reached.
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