Digital marketing refers to marketing activities carried out online, including activities like SEO, social media marketing, online display ads, email marketing, and mobile marketing. It offers more affordable costs, accurate targeting of audiences, and reliable reporting compared to traditional marketing methods.
The document then discusses various digital marketing channels like SEO, SEM, SMM, online display ads, email marketing, and mobile marketing. It provides details on how each channel works and examples of tactics used. Finally, it briefly discusses digital agencies and the types of services they provide to advertisers.