Digital marketing is a multidisciplinary approach that encompasses all marketing techniques which are implemented with the help of computer-based systems, digital technologies, and digital media. Often digital marketing is referred to as online marketing, since digital marketing activities are mostly, although not exclusively, performed on internet-channels. Digital marketing can be applied throughout a campaign to analyze, plan, and control it. Different techniques and activities like search engine optimization, search engine advertising, influencer marketing, social media marketing, and email marketing are used to create a holistic marketing concept and to reach predefined goals. Digital marketing has a wide field of application, for example, through computer-based surveys or digital prediction tools, it can be put to use in marketing research or sales policy.