Search engine marketing (SEM) means finding a site in the first rank of search engines when a user searches for the product ,service ore…. Due to increasing competition between web sites ,it seems like we need more than before to be visited through the search engines.
In fact SEM is The whole process of increasing visitors and selling our sites. Search engine marketing is a subset of Internet Marketing. This technique increases the hits in the results pages of search engines .normally SEM is done with the help of optimization and advertising in seo.
Search engine marketing is done by the search engines optimization. Unlike SEO is a time-consuming process , search engine marketing (SEM ) is done quickly and the results of it can be seen at the beginning of process ,also You can feel the changes and improvement of your job dramatically.
Keyword research is one of the most important, most valuable, and high-efficiency activities in the field of search engine marketing. Ranking of keywords properly can make or break the success of your website.
Of course search engine marketing is not always about getting visitors to your site, but also about getting the right kind of visitors for your business. With keyword research you can predict, the changing market conditions and the production of products, services, and content that web searchers seek around for theme.

SEM

SEM

After designing and launching e-commerce web site, you can pay to your main business . SEM means Search Engine Marketing and it is composed of two parts :
• Ppc
Seo
PPC means stands for Pay-Per-Click but Search Engine Marketing (SEM) , is paying to search engines –so you will be shown in ads. this method is a powerful and suitable one to control costs and benefit from spending money on online advertising.
Use this method can be useful if you can have the realistic target and budget .according to this , SEM is the best way to increase your income. Like the SEO, search engine marketing needs to be checked continuously.

Differences between SEO and SEM

The purpose of SEO is correction codes and site structure to enhance its chances of gaining top rankings in search results. In fact, SEO is a process that helps content of a site more convenient and useful for search engines. SEO modify all the code, remove redundant code and reduce the size of pages.
SEM boost visibility of the whole of site and sell the product of it , that help the site to be seen in search engine. In fact, SEO is part of SEM.