This document provides an overview of e-marketing, discussing key concepts like what e-marketing is, what e-business is, the emergence of technologies like the internet, and important environmental factors. It defines e-marketing as the application of information technologies to transform marketing strategies and more efficiently plan and execute marketing activities. E-business is defined as the continuous optimization of a firm's activities through digital technologies. Important environmental factors that influence e-marketing are discussed, including legal issues, emerging technologies, and different e-business markets like business-to-business, business-to-consumer, and business-to-government.