Internet marketing is an umbrella term for the targeted, measurable, and interactive marketing of products or services using digital technologies to reach and convert leads into customers and retain them. Internet marketing activities are search engine optimization (SEO), search engine marketing (SEM), content marketing, influencer marketing, content automation, campaign marketing, and e-commerce marketing, social media marketing, social media optimization, e-mail direct marketing, display advertising, e-books, optical disks and games, and any other form of digital media. The fundamental concept in Internet marketing is based on the inbound marketing approach or generally its called customer centric approach.