Internet marketing, also referred to as online marketing, Internet advertising, eMarketing (or e-Marketing), is the marketing of products or services over the Internet. When applied to the subset of website-based advertisement placements, Internet marketing is commonly referred to as Web advertising (Webvertising) and/or Web marketing.

The Internet has brought many unique benefits to marketing, one of which being lower costs for the distribution of information and media to a global audience. The interactive nature of Internet marketing, both in terms of providing instant response and eliciting response, is a unique quality of the medium.