The definition of demand and response is a marketing strategy that is used to measure the effectiveness of a product or service. It is based on the idea that customers will respond to a product or service when they are presented with a need or want that the product or service can fulfill. Demand and response marketing works by creating a demand for a product or service, then measuring the response from customers. This response can be in the form of sales, inquiries, or other measurable metrics. By understanding the customer’s response to a product or service, businesses can then adjust their marketing strategies to better meet the needs of their customers. Demand and response marketing is an effective way to ensure that a business is providing the right products and services to their customers.