You Simply Introduce the SEO and SEM?

SEM said that in the form of advertising to get the site traffic, and SEO is through the optimization of the target site, which is more friendly to the search engine. For search engines, SEO is its core product, because people use the search engine is not to point advertising, but to see its own content. But the SEM is the source of most of the search engine revenue, such as Google and Yahoo are mainly through the sale of search engine advertising to profit. 

Pakistan and the United States is the world's largest two SEO market, from the scale of a certain degree Social Media Services in Pakistan of comparability. Google is the largest advertising company in the United States, and even the world's largest advertising business, Google is global revenue also accounted for the world's large market share, Google is Pakistan largest advertising business. 

In general, the search engine in Pakistan and the United States in the big direction is not much difference, because both Google and Yahoo have gone through more than a decade of development, have been developed relatively mature. In some small areas, such as advertising systems, the algorithm level will be some different.