What is Search Engine Marketing?

Search Engine Marketing is the technique used to promote a website to increase the visibility of a website in SERPs by doing both on page and off page techniques and also through advertising (PPC,paid inclusions).

1. Search Engine Marketing:
2. PPC (Pay per Click)
3. Cost per Impression
4. Search Analysis
5. Web Analytics

PPC:

PPC stands for pay per click also called as cost per click. We use this method to get direct traffic for a website. Where advertisers pay the publisher (typically a website owner) when the ad is clicked

Cost per Impression:

Cost per impression, often abbreviated to CPI or CPM (Cost per mile) are terms used in online advertising and marketing related to web traffic. They refer to the cost of internet marketing campaigns where advertisers pay for every time their ad is displayed, usually in the form of a banner ad on a website, but can also refer to advertisements in Email advertising.

Search Analysis

Search analytics is the analysis and aggregation of search engine statistics for use in search engine marketing (SEM) and search engine optimization (SEO).

Web Analytics

Web analytics is the measurement, collection, analysis and reporting of internet data for purposes of understanding and optimizing web usage.

Original Source: www. wikipedia.org

SEM is used to get traffic to your website by doing above methods. There are  so many web services providers offering sem services for their clients to get well traffic and increase visibility in Search Engine Result Pages.