A marketing technique which contributes to increase sales by creating a public interest in a product or service (coupons, discounts, special offers etc.). Usually its implementation is planned at a specific time but it can be introduced as contingencies. Promotion sales must satisfy the needs of the consumer without inducing disappointment or indifference to the brand.
Mullin, Roddy (2010). Sales Promotion: How to Create, Implement and Integrate Campaigns that Really Work. Kogan Page. London p. 36.
Brochand Bernard & Lendrevie Jacques (2004). A reklám alapkönyve. KJK¬–KERSZÖV Jogi és Üzleti Kiadó Kft. Budapest. pp. 41–48.