Online Advertising can be in any form. A banner advertising campaign, a classified ad, a social network ad, a PPC ad, marketing via email etc. all these are categorized under internet advertising. Banner advertising is even so the most commonly adopted ways of online promotion among brand owners and advertisers. https://canvas.instructure.com/eportfolios/3073046/Home/Online_Advertising__A_Profitable_Means_of_Promotion_