Inbound marketing is a marketing strategy that focuses on getting found by customers. This sense is related to relationship marketing and the idea of permission marketing. We recommended that marketers “earn their way in” (via publishing helpful information on a blog etc.) in contrast to outbound marketing where they used to have to “buy, beg, or bug their way in” (via paid advertisements, issuing press releases in the hope they get picked up by the trade press, or paying commissioned sales people, respectively).
Traditional marketing (outbound marketing) is a marketing strategy that focuses on finding customers by building brand awareness through advertising and promotion. In contrast to “permission marketing,” a pejorative term for this type of marketing is “interruption marketing.”