Online advertising, also called online marketing or Internet advertising or web advertising, where publisher websites earn money for displaying ads in a way of two methods called CPC & CPM
Online advertising is a form of marketing and advertising through Internet to deliver promotional marketing messages to consumers.
CPC – Cost Per Click
It stands for Cost Per Click, money that is generated per each click on your ads. And that is determined by the advertiser, yes some of the advertisers may be willing to pay more than other based on what they are advertising. And the cost of click varies based on the country.
How to get high-CPC
Google Adsense places the higher-CPC adverts on high traffic sites, Focus your page on keywords that cost most to AdWords users, Use Channels to increase your AdSense-CPC, Place your ads carefully so that Google provides top-CPC placements where your visitors are most likely to click.
CPM – Cost Per Thousand Impressions
It denotes the price of 1,000 advertisement impressions on one webpage. If a website publisher charges $2.00 CPM, that means an advertiser must pay $2.00 for every 1,000 impressions of its ad. The “M” in CPM represents the Roman numeral for 1,000.
Advertisers running CPM ads set their desired price per 1000 ads served and pay each time their ad appears. As a publisher, you’ll earn revenue each time a CPM ad is served to your page and viewed by a user.
Watch the video-by Google Adsense to understand easily