Digital marketing refers to marketing through electronic mediums like the internet, mobile, television, and radio. It involves using technologies like websites, emails, apps, and social media to promote brands and engage with customers. There are two forms of digital marketing: pull marketing, where customers actively seek content through searches and visits to websites, and push marketing, where marketers send messages without customers seeking them out, such as display ads. Digital marketing offers many benefits over traditional marketing such as lower costs, global reach, ability to refine strategies in real-time, and potential for content to spread virally through social media sharing.