Internet marketing, also referred to as i-marketing, web marketing, online marketing, or eMarketing, is the marketing of products or services over the Internet.

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 responses, is a unique quality of the medium. Internet marketing is sometimes considered to have a broader scope because it not only refers to digital media such as the Internet, e-mail, and wireless media; however, Internet marketing also includes management of digital customer data and electronic customer relationship management (ECRM) systems.

Internet marketing ties together creative and technical aspects of the Internet, including design, development, advertising, and sale.

Internet marketing also refers to the placement of media along different stages of the customer engagement cycle through search engine marketing (SEM), search engine optimization (SEO), banner ads on specific websites, e-mail marketing, and Web 2.0 strategies. In 2008 The New York Times working with comScore published an initial estimate to quantify the user data collected by large Internet-based companies. Counting four types of interactions with company websites in addition to the hits from advertisements served from advertising networks, the authors found the potential for collecting data upward of 2,500 times on average per user per month.

Business models

Internet marketing is associated with several business models:

• e-commerce — goods are sold directly to consumers (B2C) or businesses (B2B),
• publishing — the sale of advertising,
• lead-based websites — an organization generates value by acquiring sales leads from its website, and
• affiliate marketing — A process in which a product or service developed by one person is sold by other active seller for a share of profits. The owner of the product normally provide some marketing material ( sales letter, affiliate link, tracking facility).

There are many other business models based on the specific needs of each person or business that launches an Internet marketing campaign.

One-to-one approach

The targeted user is typically browsing the Internet alone, so the marketing messages can reach them personally. This approach is used in search marketing, where the advertisements are based on search engine keywords entered by the user.

And now with the advent of Web 2.0 tools, many users can interconnect as "peers"

Appeal to specific interests

Internet marketing and geo marketing places an emphasis on marketing that appeals to a specific behaviour or interest, rather than reaching out to a broadly-defined demographic. "On- and Off-line" marketers typically segment their markets according to age group, gender, geography, and other general factors. Marketers have the luxury of targeting by activity and geolocation. For example, a kayak company can post advertisements on kayaking and canoing websites with the full knowledge that the audience has a related interest.