Online advertising, also called online marketing or Internet advertising, is a form of marketing and advertising which uses the Internet to deliver promotional marketing messages to consumers. It includes email marketing, search engine marketing (SEM), social media marketing, many types of display advertising (including web banner advertising), and mobile advertising. Like other advertising media, online advertising frequently involves both a publisher, who integrates advertisements into its online content, and an advertiser, who provides the advertisements to be displayed on the publisher's content. Other potential participants include advertising agencies who help generate and place the ad copy, an ad server which technologically delivers the ad and tracks statistics, and advertising affiliates who do independent promotional work for the advertiser.
At present, two kinds of advertising is very popular. One is google advertising which is known as google AdSense and the other is Facebook advertising. People use these two kinds of advertising most because they are very popular among the people of the world. The benefits of online advertising is very high. Using these advertising people can easily increase the number of traffic in their website and got their business popular. In the google AdSense people see the related ads in the website what they are visiting and when they find same thing they most of the time click to the ads of promotional page and go to their sites. We see almost same thing in Facebook advertisement. They accept internationally recognized credit card and PayPal as their payment method and the process of online advertising is not so tough. So anyone can take the chance to increase the publicity of his business, company or brand.