Decline stage
The last stage of a product's life cycle, during which sales fall rapidly
Demographic segmentation
Demographic segmentation consists of dividing the market into groups based on variables such as age, gender family size, income, occupation, education, religion, race and nationality
Depth interview
A lengthy, one-to-one structured interview, examining in detail a consumer's views about a product
Differentiation
A marketing strategy aimed at ensuring that products and services have a unique element to allow them to stand out from the rest
Direct mail
The delivery of an advertising or promotional message to customers or potential customers by mail.
Direct marketing
The planned recording, analysis and tracking of customer behaviour to develop a relational marketing strategies