Digital marketing, also known as internet marketing, is any form of marketing that is done through online channels online. Hence, digital marketing covers everything from social media to email marketing and all the way to performance marketing.
However, Performance marketing is a sub part of digital marketing as SEO (search engine optimization) ,SMO (social media marketing/optimization), SEM (Search engine Marketing). Performance Marketing refers to advertising campaigns in which the publisher and marketing companies are paid based on completion of desired action, such as a lead generated, sales, booking or download of an application.