Digital marketing is the marketing of products or services using digital technologies on the internet and mobile phones. It includes SEO, SMM, PPC and other digital mediums. The key benefits of digital marketing are reaching the right audience, engaging with customers, motivating action, and maximizing ROI. PPC marketing generates clicks through paid search engine ads rather than organic clicks. Digital marketing allows high ROI, targeting of interested audiences, advertising at specific times and locations, and starting with a small budget.