Digital marketing has evolved since the 1990s from basic online advertising to more sophisticated techniques for building relationships with consumers. The rapid growth of digital devices and media has fueled exponential growth in digital advertising. Digital marketing encompasses targeted, measurable, and interactive marketing across digital technologies to reach and convert potential customers. It utilizes various channels including affiliate marketing, display advertising, email marketing, search marketing, social media, and social networking. India's digital advertising market has grown significantly between 2011-2015 according to estimates.