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 it applies to the subset of website based ad placements it is commonly referred to as Web advertising (Webvertising), and/or Web Marketing. The Internet has brought many unique benefits to marketing including low costs in distributing information and media to a global audience. The interactive nature of Internet Marketing, both in terms of instant response and in eliciting response, are unique qualities of the medium.

Internet Marketing ties together creative and technical aspects of the internet, including design, development, advertising and sales. Internet Marketing methods and strategies encompass a wide range of services such as Search Engine Marketing (SEM) which can be broken down into:

Internet Marketing is the process of promoting an organization using online media, typically with the goals of increasing sales and boosting profits. This does not simply mean building or promoting a website nor does it mean simply putting a banner ad up on another website. Effective Marketing requires a comprehensive strategy that synergizes a given company's business model and sales goes with their website function & appearance, focusing on their target market through proper choice of advertising type, media, and design.

Internet Marketing as of 2007 is growing faster than other types of media.Since exposure, response and overall efficiency of Internet media is easier to track than traditional offline media, through the use of Web Analytics. For instance, Internet Marketing can offer a greater sense of accountability for advertisers. Increasingly, however, Internet Marketers and their clients are becoming aware of the need to measure the collaborative effects of marketing, i.e. how the Internet affects in-store sales, etc., instead of siloing each medium. The effects of Multi-Channel Marketing can be difficult to determine, but are an important part of ascertaining the value of media campaigns.