Web Marketing Direct
Direct marketing is a type of advertising campaign that seeks to elicit an action (such as an order, a visit to a store or Web site, or a request for further information) from a selected group of consumers in response to a communication from the marketer.
The communication itself may be in any of a variety of formats including postal mail, telemarketing, direct e-mail marketing, and point-of-sale (POS) interactions.
Customer response should be measurable: for example, the marketer should be able to determine whether or not a customer offered a discount for online shopping takes advantage of the offer.
Source: http://searchcrm.techtarget.com/definition/direct-marketing