Search Engine Marketing(SEM)
With the development of this system, the price is growing under a high level of competition. Many advertisers prefer to expand their activities, including increasing search engines and adding more keywords. The more advertisers are willing to pay for clicks, the higher the ranking for advertising, which leads to higher traffic. PPC comes at a cost. The higher position is likely to cost $5 for a given keyword. A third advertiser earns 10% less than the top advertiser while reducing traffic by 50%.