Digital marketing refers to advertising delivered through digital channels such as websites, search engines, social media, email, and mobile apps. In simple terms, digital marketing is the promotion of brands products or via one or more forms of electronic media.Digital marketing activities are search engine optimization (SEO), search engine marketing (SEM), content automation, content marketing, campaign marketing, e-commerce marketing, social media marketing, e-mail direct marketing, social media optimisation, display advertising, and any other form of digital media.