Online Advertising can be in any form. A banner ad campaigns campaign, a classified ad, a social media ad, a PPC ad, marketing via email etc. all these are categorized under online advertising. Banner advertising is though the most commonly adopted method of online promotion among brand owners and advertisers. https://www.webwiki.com/propellerads.com/blog/pt-br/o-que-e-publicidade-on-line-tipos-beneficios-dicas-e-sugestoes/